BS EN 10209-2013--[2016-06-12--11-13-08 AM].pdf

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BSI Standards Publication

Cold rolled low carbon steel

flat products for vitreous

enamelli

ng —

T

echnic

al

delivery conditions

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National foreword

This British Standard is the UK implementation of EN 10209:2013

This British Standard is the UK implementation of EN 10209:2013. It. It

supersedes BS EN 10209:1996 which

supersedes BS EN 10209:1996 which is withdrawn.is withdrawn.

The UK participation in

The UK participation in its preparation was entrusted to Technicalits preparation was entrusted to Technical

Committee ISE/109, Coated and Uncoated Flat Products to be Used

for Cold Forming.

A list of organizations represented on this committee can be

obtained on request to its secretary.

This publication does not purport to include all the necessary

provisions of a contract. Users are

provisions of a contract. Users are responsible for its correctresponsible for its correct

application.

Limited 2013 Limited 2013 ISBN 978 0 580 71517 4 ISBN 978 0 580 71517 4 ICS 77.140.50 ICS 77.140.50

Compliance with a British Standard cannot confer immunity from

legal obligations.

This British Standard was

This British Standard was published under the authority of thepublished under the authority of the

Standards Policy and Strategy Committee on 31 July 2013.

Amendment

Amendments issued s issued since publicationsince publication

D

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NORME EUROPÉENNE

EUROPÄISCHE NORM

_{June 2013}

ICS 77.140.50

ICS 77.140.50 SupersedesSupersedesEN 10209:1996EN 10209:1996

English Version

Cold rolled low carbon steel flat products for vitreous enamelling

- Technical delivery conditions

Produits plats laminés à froid,

Produits plats laminés à froid, en acier doux pour émaillageen acier doux pour émaillage par vitrification - Conditions techniques de livraison

par vitrification - Conditions techniques de livraison Kaltgewalzte FlacherzeugKaltgewalzte Flacherzeugnisse aus weichen Stählen Emaillieren - Emaillieren - Technische LieferbedingungenTechnische Lieferbedingungennisse aus weichen Stählen zumzum

This European Standard was approved by CEN on 11

This European Standard was approved by CEN on 11 April 2013.April 2013. CEN members are

CEN members are bound to comply with the bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanCEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of

Standard the status of a national standard without any alteration. Up-to-date lists a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationaland bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English,

This European Standard exists in three official versions (English, French, German). A version in any French, German). A version in any other language made by translationother language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and UnitedSweden, Switzerland, Turkey and United Kingdom.

Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T É E U R O P É E N D E

C O M I T É E U R O P É E N D E N O R M A L I S A T I O NN O R M A L I S A T I O N E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G

Management

Management Centre: Centre: AvenuAvenue Marnix 17e Marnix 17, , B-1000 BB-1000 Brusselsrussels

worldwide for CEN national Members.

Ref. No. EN 10209:2013: E Ref. No. EN 10209:2013: E

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Page

Foreword

Foreword ...3...3 1

1 Scope Scope ...4...4 2

2 Normative Normative references ...references ...4...4 3

3 Terms and Terms and definitions ...definitions ...5...5 4 4 Designation Designation ...5...5 5 5 Requirements Requirements ...5...5 6 6 Tests Tests ...8...8 7 7 Identification Identification ...9...9 8 8 Packaging Packaging ...9...9 9 9 Disputes Disputes ...9...9 10

10 Information to be supplied by the purchaser at the time of ordering ...9Information to be supplied by the purchaser at the time of ordering ...9 Annex A

Annex A (normative) (normative) Methods for determining the resistance to fish scMethods for determining the resistance to fish scaling of a steel sheet aling of a steel sheet forfor enamelling ...

enamelling ... ... 1313 Annex B

Annex B (normative) (normative) Method for determining mass loss (iron loss) Method for determining mass loss (iron loss) due to pickling for steel due to pickling for steel grades forgrades for direct enamelling

direct enamelling in accordance in accordance with with 5.4.2 5.4.2 ... 17... 17 Annex C

Annex C (normative) (normative) Method for determining the adherence level of enamel applied to a steel sheet . Method for determining the adherence level of enamel applied to a steel sheet . 2020 Annex D

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Foreword

This document (EN 10209:2013) has been prepared by Technical Committee ECISS/TC 109 “Flat products for cold This document (EN 10209:2013) has been prepared by Technical Committee ECISS/TC 109 “Flat products for cold working - Qualities, dimensions, tolerances and specific test”, the secretariat of which is held by AFNOR.

working - Qualities, dimensions, tolerances and specific test”, the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of an identical text or This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2013, and conflicting national standards shall be withdrawn at the latest by endorsement, at the latest by December 2013, and conflicting national standards shall be withdrawn at the latest by December 2013.

by December 2013. Attention is drawn t

Attention is drawn t o the possibility that o the possibility that some of some of the elements of the elements of this document may be this document may be the subject of the subject of patent rights.patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes

This document supersedes EN 10209:1996EN 10209:1996..

According

According to to the the CEN-CENELEC CEN-CENELEC Internal Internal Regulations, Regulations, the the national national standards standards organizations organizations of of the the followingfollowing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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1 Scope

This European Standard applies to cold rolled non-coated low carbon steel flat products in rolled widths equal to or This European Standard applies to cold rolled non-coated low carbon steel flat products in rolled widths equal to or over 600 mm and in thicknesses equal to or less than 3 mm, delivered in sheet, wide strip, slit wide strip or cut over 600 mm and in thicknesses equal to or less than 3 mm, delivered in sheet, wide strip, slit wide strip or cut lengths obtained from slit wide strip or sheet.

lengths obtained from slit wide strip or sheet.

It does not apply to cold rolled narrow strip (rolling width < 600 mm) nor to cold rolled flat products for which there is It does not apply to cold rolled narrow strip (rolling width < 600 mm) nor to cold rolled flat products for which there is a specific standard, in particular the following:

a specific standard, in particular the following: —

— cold-rolled lcold-rolled low carbon ow carbon steel flat steel flat products for products for cold forming cold forming ((EN 10130EN 10130););

—

— cold-rolled non cold-rolled non oriented electrical oriented electrical steel sheet steel sheet and strip and strip delivered in delivered in fully processed fully processed state (state (EN 10106EN 10106);); —

— cold rolled electrical non-alloy and alloy cold rolled electrical non-alloy and alloy steel sheet and strip delivered in the semi-processed statesteel sheet and strip delivered in the semi-processed state ((EN 10341EN 10341););

—

— cold cold reduced reduced blackplate blackplate ((EN 10205EN 10205);); —

— steel steel sheet and sheet and strip strip for wefor welded gas lded gas cylinders cylinders ((EN 10120EN 10120););

—

— cold-rolled uncoated cold-rolled uncoated non-alloy mild non-alloy mild steel narrow steel narrow strip strip for cold for cold forming (forming (EN 10139EN 10139);); —

— cold-rolled cold-rolled structural structural steels steels for for general general purposes;purposes; —

— cold-rolled flat cold-rolled flat products made products made of high of high yield yield strength for strength for cold forming cold forming ((EN 10268EN 10268).).

2 2 Normative

Normative references

references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

referenced document (including any amendments) applies. EN 10021

EN 10021,, General technical delivery conditions for steel productsGeneral technical delivery conditions for steel products EN 10027-1

EN 10027-1,, Designation systems for steels - Part 1: Steel namesDesignation systems for steels - Part 1: Steel names EN 10027-2

EN 10027-2,, Designation systems for steels - Part 2: Numerical systemDesignation systems for steels - Part 2: Numerical system

EN 10049

EN 10049,, Measurement of roughness average Ra and peak count RPc on metallic flat productsMeasurement of roughness average Ra and peak count RPc on metallic flat products EN 10079:2007

EN 10079:2007,, Definition of steel productsDefinition of steel products

EN 10131

EN 10131,, Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield strengthCold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield strength steel flat products for cold forming - Tolerances on dimensions and shape

steel flat products for cold forming - Tolerances on dimensions and shape

EN 10204

EN 10204,, Metallic products - Types of inspection documentsMetallic products - Types of inspection documents EN ISO 377

EN ISO 377,, Steel and steel products - Location and preparation of samples and test pieces for mechanical testingSteel and steel products - Location and preparation of samples and test pieces for mechanical testing (

( ISO 377 ISO 377 ) ) EN ISO 6892-1

EN ISO 6892-1,, Metallic materials - Tensile testing - Part 1: Method of test at room temperature ( Metallic materials - Tensile testing - Part 1: Method of test at room temperature ( ISO 6892-1ISO 6892-1 ) ) ISO 10113

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3 3 Terms

Terms and

and definitions

definitions

For the purposes of this document, the terms and definitions given in

For the purposes of this document, the terms and definitions given in EN 10079:2007EN 10079:2007..

4 Designation

4.1

4.1 Steel Steel names names are are attributed attributed in in accordance accordance withwith EN 10027-1EN 10027-1; numerical designations are attributed in; numerical designations are attributed in accordance with

accordance with EN 10027-2EN 10027-2..

All steels reported in Table 2 are non alloy and alloy quality steels. All steels reported in Table 2 are non alloy and alloy quality steels.

4.2

4.2 Products Products conforming to conforming to this Euthis European Standard ropean Standard shall shall be be designated, idesignated, in order, n order, in in the the following following way:way:

a)

a) product product designation designation (e.g. strip, (e.g. strip, sheet or sheet or “slit “slit strip strip cut cut longitudinally”);longitudinally”); b)

b) number number of of this this European European Standard Standard ((EN 10209EN 10209);); c)

c) name or name or numerical numerical designation designation of of the the steel, steel, shown shown in in Table 2;Table 2; d)

d) where where appropriate, the appropriate, the symbol symbol relating trelating to o surface finisurface finish (see sh (see Table 1).Table 1).

Examples of conventional designations: Examples of conventional designations:

Designation of a steel sheet with the symbolic designation DC01EK and the numerical designation 1.0390 with Designation of a steel sheet with the symbolic designation DC01EK and the numerical designation 1.0390 with rough surface finish (

rough surface finish (r r ):):

Sheet

Sheet EN 10209EN 10209 DC01EK DC01EK r r or or

Sheet

Sheet EN 10209EN 10209 — 1.0390 — 1.0390 r r

Designation of a wide strip of steel with the symbolic designation DC06ED and the numerical designation 1.0872 Designation of a wide strip of steel with the symbolic designation DC06ED and the numerical designation 1.0872 with normal surface finish (

with normal surface finish (mm):):

Wide strip

Wide strip EN 10209EN 10209 — DC06ED — DC06ED mm or or Wide strip

Wide strip EN 10209EN 10209 — 1.0872 — 1.0872 mm..

5 Requirements

5.1 Steelmaking and

5.1 Steelmaking and manufacturing processes

manufacturing processes

Unless otherwise agreed at the time of ordering, the production methods shall be left to the discretion of the Unless otherwise agreed at the time of ordering, the production methods shall be left to the discretion of the manufacturer.

manufacturer.

The purchaser shall be informed of these processes if specified in the purchase order. The purchaser shall be informed of these processes if specified in the purchase order.

5.2 Method of deoxidation

See Table 2. See Table 2.

5.3 Chemical composition

The maximum values for the chemical compositions based on ladle analysis shall be as given in Table 2. The maximum values for the chemical compositions based on ladle analysis shall be as given in Table 2.

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5.4 Suitability for vitreous enamelling

5.4.1

5.4.1 Qualities DCQualities DCO1EK, DC04EK, O1EK, DC04EK, DC05EK and DC05EK and DC06EK are DC06EK are suitable for suitable for one oone or two r two coats of coats of conventionalconventional enamelling.

enamelling. 5.4.2

5.4.2 Qualities DCQualities DC03ED, DC04ED 03ED, DC04ED and DC06ED and DC06ED are suitable are suitable for direct for direct enamelling, as enamelling, as well well as for as for the two the two coat –coat – one fire process and for the special applications of two coat enamelling for sag resistance.

one fire process and for the special applications of two coat enamelling for sag resistance. 5.4.3

5.4.3 The following The following methods of methods of test are test are defined in defined in order to order to determine the determine the suitability of suitability of the steel the steel for enamelling:for enamelling:

—

— hydrogen permeation test hydrogen permeation test (see Annex (see Annex A) (alternatively, if A) (alternatively, if agreed at the agreed at the time of time of ordering, an enamelling ordering, an enamelling test astest as described in A.2 may be specified).

described in A.2 may be specified).

NOTE

NOTE These These two two tests tests enable enable the the risk risk of of fish fish scaling scaling following following enamelling enamelling to to be be assessed.assessed.

—

— iron loss iron loss test for qtest for qualities of steel ualities of steel for direct enamelling for direct enamelling as described as described in 5.4.2 in 5.4.2 (see Annex B).(see Annex B).

5.4.4

5.4.4 An enamel An enamel adherence test adherence test (see Annex (see Annex C) is C) is also defined also defined (pretreatment and (pretreatment and enamelling enamelling conditions shall conditions shall bebe agreed at the time of ordering).

agreed at the time of ordering). 5.4.5

5.4.5 The application The application of the of the methods of temethods of test described st described in Annex in Annex A, Annex B A, Annex B and Annex C and Annex C may be may be the subject the subject ofof an agreement at the time of ordering.

an agreement at the time of ordering.

5.5 Delivery condition

5.5.1

5.5.1 Products specified Products specified in this in this standard should standard should be supplied be supplied in in the skin-passed the skin-passed condition. If condition. If agreed at agreed at the time the time ofof ordering non-skin-passed products may be supplied.

ordering non-skin-passed products may be supplied. 5.5.2

5.5.2 The products The products are normally dare normally delivered oiled. elivered oiled. In this In this case, both case, both the surfaces the surfaces are preserved by are preserved by a layer oa layer off neutral non-drying oil, free of foreign bodies and uniformly spread in such a way that under normal conditions of neutral non-drying oil, free of foreign bodies and uniformly spread in such a way that under normal conditions of packaging, transportation, handling and storage the products will show no corrosion for up to three months.

packaging, transportation, handling and storage the products will show no corrosion for up to three months.

If the conditions of transportation or storage are such that special protection against corrosion is required, the If the conditions of transportation or storage are such that special protection against corrosion is required, the purchaser shall inform the manufacturer at the time of the ordering.

purchaser shall inform the manufacturer at the time of the ordering.

The layer of oils shall be capable of being removed by alkaline solutions or normal solvents. The layer of oils shall be capable of being removed by alkaline solutions or normal solvents. The choice of protective oils may be the subject of special agreement.

The choice of protective oils may be the subject of special agreement.

If the purchaser does not require the surfaces to be oiled, this shall be clearly indicated at the time of the ordering. If the purchaser does not require the surfaces to be oiled, this shall be clearly indicated at the time of the ordering.

NOTE

NOTE If the If the order order is is for for unoiled unoiled products, products, the the manufacturer manufacturer is is not not responsible responsible for for the the risk risk of rof rust. ust. The The purchaser purchaser is is alsoalso advised that there is a

advised that there is a greater risk of the appearance of greater risk of the appearance of light scratches during handling, transportation, and application.light scratches during handling, transportation, and application.

5.6 Choice of properties

The products covered by this European Standard shall correspond to the requirements of Table 1 and Table 2. The products covered by this European Standard shall correspond to the requirements of Table 1 and Table 2. Subject to agreement between the supplier and the purchaser, they may be supplied with particular suitability for Subject to agreement between the supplier and the purchaser, they may be supplied with particular suitability for the production of a specific part; in this case a maximum rejection percentage may be set by mutual agreement and the production of a specific part; in this case a maximum rejection percentage may be set by mutual agreement and acceptance on the basis of mechanical properties would not apply.

acceptance on the basis of mechanical properties would not apply.

5.7 Mechanical

5.7 Mechanical properties

properties

The mechanical properties given in Table 2 only apply to skin-passed products. These mechanical properties are The mechanical properties given in Table 2 only apply to skin-passed products. These mechanical properties are valid for the period specified in Table 2 from the date on which the products are made available.

valid for the period specified in Table 2 from the date on which the products are made available.

The date of availability shall be notified to the purchaser with reasonable prior notice compatible with the validity of The date of availability shall be notified to the purchaser with reasonable prior notice compatible with the validity of the mechanical properties.

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5.8 Surface

5.8 Surface characteristics

characteristics

5.8.1 General

The surface characteristics consist of the surface appearance and surface finish. The surface characteristics consist of the surface appearance and surface finish.

5.8.2 Surface

5.8.2 Surface appearance

appearance

The products are supplied with a surface appearance which does not adversely affect suitability for forming, the The products are supplied with a surface appearance which does not adversely affect suitability for forming, the application of an enamel coating and the uniform appearance of the enamelled surface on the exposed surface. application of an enamel coating and the uniform appearance of the enamelled surface on the exposed surface. When supplied as wide strip and slit strip, the percentage of surface defects may be higher than when supplied as When supplied as wide strip and slit strip, the percentage of surface defects may be higher than when supplied as sheet and cut lengths. This shall be taken into account by the purchaser and the permissible percentage of surface sheet and cut lengths. This shall be taken into account by the purchaser and the permissible percentage of surface defects shall be set by special agreement at the time of ordering.

defects shall be set by special agreement at the time of ordering.

Unless otherwise agreed, a single surface of the product shall comply with the specified requirements. The other Unless otherwise agreed, a single surface of the product shall comply with the specified requirements. The other surface shall be such that during subsequent treatment it does not have a deleterious effect on the better surface. surface shall be such that during subsequent treatment it does not have a deleterious effect on the better surface.

5.8.3 Surface finish

The surface finish may be normal or rough. The surface finish may be normal or rough.

In the absence of a requirement in the order, products shall be supplied with the normal surface finish. In the absence of a requirement in the order, products shall be supplied with the normal surface finish.

The limiting figures for average surface roughness for the two types of finish are given in Table 1. The limiting figures for average surface roughness for the two types of finish are given in Table 1. The measurements shall be made in accordance with

The measurements shall be made in accordance with EN 10049EN 10049..

If specially agreed at the time of ordering, other ranges for surfaces are specified for specific end uses. If specially agreed at the time of ordering, other ranges for surfaces are specified for specific end uses.

Table 1 — Surface finishes and standard roughness Table 1 — Surface finishes and standard roughness

Surface

Surface finish finish Symbol Symbol RoughnessRoughness

Normal Normal Rough Rough m m r r 0,6 0,6 µµm <m < R R aa≤≤ 1,9 1,9 µµmm R R aa > 1,6 > 1,6 µµmm

5.9 Stretcher strain marks

All the products are generally subjected to a

All the products are generally subjected to a light skin-pass after annealing at the manufacturer'light skin-pass after annealing at the manufacturer' s works to avoid thes works to avoid the formation of stretcher strain marks during subsequent forming. The tendency to form such marks may reappear a formation of stretcher strain marks during subsequent forming. The tendency to form such marks may reappear a certain time after the skin-pass. It is therefore in the purchaser's interest to form the products as soon as possible. certain time after the skin-pass. It is therefore in the purchaser's interest to form the products as soon as possible. Quality DC06EK and DC06ED products do not exhibit stretcher strain marks after deformation.

Quality DC06EK and DC06ED products do not exhibit stretcher strain marks after deformation.

For the other qualities the absence of stretcher strain marks may be guaranteed for six months after the products For the other qualities the absence of stretcher strain marks may be guaranteed for six months after the products are made available.

are made available.

5.10 Weldability

The material is specified as suitable for normal welding procedures as long as the products are degreased The material is specified as suitable for normal welding procedures as long as the products are degreased beforehand. The welding procedure shall be specified at the time of ordering (see 10 h).

beforehand. The welding procedure shall be specified at the time of ordering (see 10 h).

5.11 Tolerances on dimensions and shape

Tolerances on dimensions and shape are given in

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6 Tests

6.1 General

6.1.1

6.1.1 The The purchaser purchaser shall shall specify specify at at the the time time of of ordering ordering his his requirements requirements for:for:

—

— type type of of inspection inspection and and testing: specific testing: specific or or non-specific, seenon-specific, see EN 10021EN 10021;; —

— type type of of inspection inspection document, document, seesee EN 10204EN 10204.. 6.1.2

6.1.2 Specific inspection Specific inspection and testing and testing shall be shall be carried out carried out in accordance in accordance with with 6.2, 6.3, 6.2, 6.3, 6.4, 6.5 6.4, 6.5 and 6.6.and 6.6.

6.1.3

6.1.3 Specific inspection Specific inspection and testing and testing may not may not be specified be specified either for either for the pthe product analysis roduct analysis or the or the surface finish.surface finish.

6.2 Inspection units

The inspection unit is 30 t or a fraction of 30 t products of the same grade and nominal thickness. The inspection unit is 30 t or a fraction of 30 t products of the same grade and nominal thickness.

When a wide coil exceeds 30 t, it constitutes a single inspection unit, as do its products. When a wide coil exceeds 30 t, it constitutes a single inspection unit, as do its products.

6.3 Number of tests

For each inspection unit a tensile test shall be carried out, and if required, a determination of

For each inspection unit a tensile test shall be carried out, and if required, a determination of r r and of the suitability and of the suitability for enamelling shall be performed (see Table 2 and Annex A, Annex B and Annex C).

for enamelling shall be performed (see Table 2 and Annex A, Annex B and Annex C).

6.4 Sampling

The requirements of

The requirements of EN ISO 377EN ISO 377 and and EN 10021EN 10021 are supplemented by the following specific requirements. are supplemented by the following specific requirements.

For sheet and cut lengths the selection of products to be tested and the position of the samples in the products is For sheet and cut lengths the selection of products to be tested and the position of the samples in the products is left to the discretion of the inspection representative.

left to the discretion of the inspection representative.

In the case of wide strip and slit wide strip, the sample should preferably be taken from the outer end. In the case of wide strip and slit wide strip, the sample should preferably be taken from the outer end.

If the width of the product permits, the test pieces for the tensile test shall be taken perpendicular to the direction of If the width of the product permits, the test pieces for the tensile test shall be taken perpendicular to the direction of rolling at a distance of at least 50 mm from the edge of the product.

rolling at a distance of at least 50 mm from the edge of the product.

6.5 Test methods

6.5.1

6.5.1 The products The products shall be shall be tested in tested in the as-delivered the as-delivered condition. The condition. The tests shall tests shall be carried be carried out at out at ambientambient temperature.

temperature. 6.5.2

6.5.2 The The tensile tensile test test shall shall be be carried carried out out as as specified specified inin EN ISO 6892-1EN ISO 6892-1 using type 2 test pieces (initial gauge using type 2 test pieces (initial gauge length

length LLoo = 80 mm, width = 80 mm, width bb = 20 mm). = 20 mm).

6.5.3

6.5.3 Surface Surface roughness roughness shall shall be be measured measured in in accordance accordance withwith EN 10049EN 10049..

6.5.4

6.5.4 The The determination determination of of the the plastic plastic strain strain ratioratio r r shall be carried out in accordance with shall be carried out in accordance with ISO 10113ISO 10113.. 6.5.5

6.5.5 The tests The tests for suitabilfor suitability for ity for enamelling (see enamelling (see 5.4.3) shall 5.4.3) shall be be carried out carried out in accordance in accordance withwith

—

— Annex Annex A A for for the the fish fish scaling scaling resistance resistance test;test; —

— Annex B Annex B for the for the mass loss mass loss due due to pickling to pickling test;test; —

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6.5.6

6.5.6 For the For the determination of determination of the chemical the chemical composition tcomposition the corresponding he corresponding European Standards European Standards shall apply shall apply inin cases of dispute.

cases of dispute.

6.6 Retests

The requirements of

The requirements of EN 10021EN 10021 shall apply. For coils, in the event of the test results giving rise to dispute, the shall apply. For coils, in the event of the test results giving rise to dispute, the samples for retests shall be taken at intervals of at least one lap but also at a maximum distance of 20 m from the samples for retests shall be taken at intervals of at least one lap but also at a maximum distance of 20 m from the appropriate end.

appropriate end.

6.7 Inspection documents

If agreed at the time of ordering, an inspection document chosen from those given in

If agreed at the time of ordering, an inspection document chosen from those given in EN 10204EN 10204 shall be supplied shall be supplied (see also 6.1.1).

(see also 6.1.1).

7 Identification

All materials shall be identified with at least the following information: All materials shall be identified with at least the following information:

—

— the the conventional conventional designation designation as as described described in in Clause Clause 4;4; —

— the the coil coil or or bundle bundle number;number;

—

— the the supplier's supplier's mark.mark.

Typically, the identification is applied by either a label or using an easily removable non-corrosive ink on the Typically, the identification is applied by either a label or using an easily removable non-corrosive ink on the inspected surface. Other identification requirements shall be agreed at the time of ordering.

inspected surface. Other identification requirements shall be agreed at the time of ordering.

8 Packaging

The packaging requirements shall be agreed at the time of ordering. The packaging requirements shall be agreed at the time of ordering.

9 Disputes

With regard to any claims and actions,

With regard to any claims and actions, EN 10021EN 10021 shall apply. shall apply.

10 10 Information to be supplied by the purchaser at the time

Information to be supplied by the purchaser at the time of ordering

of ordering

To permit the manufacturer to supply products conforming to this standard, the following information should be To permit the manufacturer to supply products conforming to this standard, the following information should be given in the order:

given in the order: a)

a) the the full full designation designation as as given given in in Clause Clause 4;4; b)

b) nominal nominal dimensions dimensions and and quantities;quantities;

c)

c) if if the the products products are are to to be be supplied supplied non non skin-passed,skin-passed, d)

d) if the if the products are products are to be to be delivered with delivered with mill edges mill edges or sheared or sheared edges;edges; e)

e) limits limits on on mass and mass and sizes sizes of of coils coils and iand individual ndividual bundles;bundles;

f)

f) intended intended application application for for the the products;products; g)

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h)

h) if the if the products are products are to be to be welded, indication welded, indication of the of the method to method to be used;be used;

i)

i) if if the the products aproducts are to re to be be supplied as supplied as suitable suitable for making for making a a specific paspecific part;rt; j)

j) if inspection documents are requested and type;if inspection documents are requested and type; k)

k) if an if an external inspection external inspection is to is to be carried be carried out at out at the manufacturer's the manufacturer's works;works;

l)

l) if if oiling oiling is is not not required;required; m)

m) detailed detailed description description of of all oall other specither special al requirements;requirements; n)

n) any any special special requirements requirements for for packaging packaging and and marking;marking;

o)

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11 11 Designation Designation in in accordance accordance with with EN 10027–1 EN 10027–1 Designation in Designation in accordance accordance with with EN 10027–2 EN 10027–2 Method of Method of deoxidatio deoxidatio n n Validity of Validity of mechanical mechanical properties and properties and absence of absence of stretcher strain stretcher strain marks marks R R ee MPa MPa max max b c l b c l R R mm MPa MPa ll A A8080 % % min min d l d l _ _ rr avera avera ge ge min min e l e l

Chemical composition (ladle analysis) Chemical composition (ladle analysis)

% max % max C content C content (product analysis) (product analysis) % max % max C C Ti Ti Mn Mn P P SS DC01EK

DC01EK 1.0390 1.0390 Fully Fully killedkilled f

f 6 months6 months f

f 270 270 270/390 270/390 30 30 0.08 0.08 0.60 0.60 0,045 0,045 0,0500,050 DC04EK

DC04EK 1.0392 1.0392 Fully Fully killed killed 6 6 months months 220220kk 270/350 270/350 36 36 0.08 0.08 0,50 0,50 0,030 0,030 0,0500,050 DC05EK

DC05EK 1.0386 1.0386 Fully Fully killed killed 6 6 months months 220220kk 270/350 270/350 36 36 1.5 1.5 0.08 0.08 0,50 0,50 0,025 0,025 0,0500,050 DC06EK

DC06EK 1.0869 1.0869 Fully Fully killed killed 6 6 months months 190 190 270/350 270/350 38 38 1.6 1.6 0.02 0.02 0.300.30hh 0,50 0,50 0,020 0,020 0,0500,050 DC03ED

DC03ED 1.0399 1.0399 Fully Fully killedkilled f

f 6 months6 months f

f 240 240 270/370 270/370 3434 j j 0,40 0,40 0,035 0,035 0,050 0,050 0,0040,004 DC04ED

DC04ED 1.0394 1.0394 Fully Fully killed killed 6 6 months months 210210gg 270/350 270/350 3838 j j 0,40 0,40 0,030 0,030 0,050 0,050 0,0040,004 DC06ED

DC06ED 1.0872 1.0872 Fully Fully killed killed 6 6 months months 190 190 270/350 270/350 38 38 1.6 1.6 0.02 0.02 0.300.30hh 0,35 0,35 0,020 0,020 0,0500,050 a

a _{The mecha}_{The mechanical pro}_{nical properties ap}_{perties apply only}_{ply only to skin-pa}_{to skin-passed produ}_{ssed product.}_ct. b

b _{The v}_{The value}_{alue for y}_{for yield}_{ield stress}_{stress is the}_{is the R}_R

p

p 0,2 % for products which do not present a definite yield point and the lower yield stress ( 0,2 % for products which do not present a definite yield point and the lower yield stress (R R elel,) for the others. When ,) for the others. When the thickness is lessthe thickness is less

than or equal to 0,7 mm and greater than 0,5 mm, the value for yield stress is increased by 20 MPa. For thicknesses less than or equal to 0,5 mm, the value is increased by than or equal to 0,7 mm and greater than 0,5 mm, the value for yield stress is increased by 20 MPa. For thicknesses less than or equal to 0,5 mm, the value is increased by 40 MPa.

40 MPa. c

c _For_{For design}_{design purposes,}_{purposes, the}_{the lower}_{lower limit}_{limit of}_{of R}_R

e

e for qualities DCO1EK, DC04EK, DC05EK, DC03ED and DC04ED m for qualities DCO1EK, DC04EK, DC05EK, DC03ED and DC04ED m ay be assumed to be 140 ay be assumed to be 140 MPa and for qualities DC06EK andMPa and for qualities DC06EK and

DC06ED as 120 MPa. DC06ED as 120 MPa. d

d _{When the thickness is less than or}_{When the thickness is less than or equal to 0,7 mm, and greater than 0}_{equal to 0,7 mm, and greater than 0,5 mm, the minimum elongatio}_{,5 mm, the minimum elongation value after fracture is reduced}_{n value after fracture is reduced by 2 units. For thicknesses equal}_{by 2 units. For thicknesses equal to or}_{to or} less than 0,5 mm, the minimum value is reduced by 4 units.

less than 0,5 mm, the minimum value is reduced by 4 units. e

e _The_{The value}_{value of}_{of r average}_{r average only applies to products of thicknesses equal to or greater than 0,5 mm. When the thickness is over 2,0 mm, the value of}_{only applies to products of thicknesses equal to or greater than 0,5 mm. When the thickness is over 2,0 mm, the value of r average}_{r average is reduced by 0,2}_{is reduced by 0,2} units.

units. f

f _{Subject to agreement}_{Subject to agreement at the time o}_{at the time of ordering, other}_{f ordering, other deoxidation methods may}_{deoxidation methods may be used. If so,}_{be used. If so, the periods for v}_{the periods for validity of the mechani}_{alidity of the mechanical properties an}_{cal properties and the absence of st}_{d the absence of stretcher}_retcher strain marks shall be agreed at t

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12 12 h

h _{Titanium may be}_{Titanium may be replaced by niobium i}_{replaced by niobium if agreed upon}_{f agreed upon at the time of}_{at the time of ordering. Carbon}_{ordering. Carbon and nitrogen shall}_{and nitrogen shall be completely bound.}_{be completely bound.}

ii _{Subject to agreement}_{Subject to agreement at the time o}_{at the time of ordering, other}_{f ordering, other steels may be}_{steels may be supplied which have}_{supplied which have the same mechani}_{the same mechanical properties. If}_{cal properties. If so, the chemical}_{so, the chemical composition of th}_{composition of these steels shall}_{ese steels shall} be agreed at the time of ordering.

be agreed at the time of ordering. j

j _{The decarburisatio}_{The decarburisation of qualities}_{n of qualities DC03ED and}_{DC03ED and DC04ED can}_{DC04ED can take place}_{take place in the so}_{in the solid or the}_{lid or the liquid phase.}_{liquid phase. The carbon}_{The carbon content, determined}_{content, determined by product}_{by product analysis after}_{analysis after} decarburisation shall be 0,004 % maximum. If

decarburisation shall be 0,004 % maximum. If agreed at the time of agreed at the time of ordering, qualities DC03ED and DC04ED may contain for example titanium, ordering, qualities DC03ED and DC04ED may contain for example titanium, niobium or boron.niobium or boron. k

k _{At the}_{At the request of}_{request of the purchaser,}_{the purchaser, the DC04EK}_{the DC04EK and DC05EK}_{and DC05EK qualities may}_{qualities may be supplied}_{be supplied with}_withR_R

e

e≤≤ 210 MPa and 210 MPa and A A8080≥≥ 38 % in the 0,7 mm to 1,5 mm thicknesses. It is therefore 38 % in the 0,7 mm to 1,5 mm thicknesses. It is therefore

for the manufacturer to select the surface

for the manufacturer to select the surface roughness within the range of normal roughness options.roughness within the range of normal roughness options. l

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Annex A

(normative)

Methods for determining the resistance to fish scaling of a steel sheet for

enamelling

A.1 Hyd

A.1 Hydrogen permeation

rogen permeation test

test

A.1.1

A.1.1 Field Field of of applicationapplication

The test pieces shall be 0,5 mm to 3 mm thick. The test pieces shall be 0,5 mm to 3 mm thick. A.1.2 Principle

A.1.2 Principle

Generate hydrogen electrolytically on one side of a degreased sheet. The time between the start of electrolysis and Generate hydrogen electrolytically on one side of a degreased sheet. The time between the start of electrolysis and the determination of hydrogen having passed to the other side of the sheet shall be defined as the hydrogen the determination of hydrogen having passed to the other side of the sheet shall be defined as the hydrogen permeation time. A long permeation time shall indicate good resistance to fish scaling.

permeation time. A long permeation time shall indicate good resistance to fish scaling. A.1.3 Apparatus

A.1.3 Apparatus

—

— E. E. Buchel Buchel and and L. L. Leontaritis Leontaritis measuring measuring apparatus.apparatus.

—

— Electrolyte made Electrolyte made up of 6 up of 6 % (volume fraction) % (volume fraction) by volume by volume of Hof H22S0S044 (60 ml of H (60 ml of H22S0S044 concentrated in 940 ml of concentrated in 940 ml of

distilled water) with 0,25 g/l of HgCl

distilled water) with 0,25 g/l of HgCl22 and 0,5 g/l of As and 0,5 g/l of As220033. The solution shall be freshly made for each test (the. The solution shall be freshly made for each test (the

chemical products being of analytical quality). chemical products being of analytical quality). —

— Highly Highly alkaline dalkaline degreasing agent, egreasing agent, suitable suitable for steel for steel sheets, containing sheets, containing silicates.silicates.

—

— Deionised Deionised water.water. —

— 10 10 - - 15 15 % % (mass (mass fraction) fraction) hydrochloric hydrochloric acidacid

A.1.4 Sampling A.1.4 Sampling

At

At least least 4 4 samples samples (70 mm (70 mm to to 90 mm 90 mm wide wide and and not not less less than than 100 mm 100 mm long) long) shall shall be be taken taken from from each each delivery. delivery. ItIt should be noted that the most susceptible parts to fish scaling are those at the edges of the coil.

should be noted that the most susceptible parts to fish scaling are those at the edges of the coil.

A.1.5 Preparation A.1.5 Preparation

Bath No. 1

Bath No. 1: Degreasing: Degreasing

30 g/l ± 5 g/l of degreasing agent in deionised water. The bath shall be changed daily. Use glass hooks for the 30 g/l ± 5 g/l of degreasing agent in deionised water. The bath shall be changed daily. Use glass hooks for the installation. Bath temperature: 70 °C to 75 °C. Time = 5 min, stirring with a magnetic stirrer.

installation. Bath temperature: 70 °C to 75 °C. Time = 5 min, stirring with a magnetic stirrer. Bath No. 2

Bath No. 2: Cold rinsing: Cold rinsing

By spraying (or immersion) with mains water for 30 s. By spraying (or immersion) with mains water for 30 s. Bath No. 3

Identical to Bath No. 1, but with 20 g/l ± 5 g/l of degreasing agent. Identical to Bath No. 1, but with 20 g/l ± 5 g/l of degreasing agent.

Bath No. 4

Bath No. 4: Hot rinsing: Hot rinsing

By spraying (or immersion) with mains water at 65 °C for 30 s. By spraying (or immersion) with mains water at 65 °C for 30 s.

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Bath No. 5

Bath No. 5: Cool rinsing: Cool rinsing

In running water for 2 min. In running water for 2 min.

A.1.6

A.1.6 Checks Checks on on the the degreasing degreasing qualityquality Alter Bath

Alter Bath No. 5, No. 5, take a take a sample sample as a as a control samcontrol sam ple and ple and treat treat in the in the following following way (this way (this control scontrol sample will ample will not bnot bee used to determine the-hydrogen permeation time).

used to determine the-hydrogen permeation time). A.1.6.1

A.1.6.1 Immerse the control sample in a 10 % to 15 % solution of hydrochloric acid (100 g/l to 150 g/l HCl) atImmerse the control sample in a 10 % to 15 % solution of hydrochloric acid (100 g/l to 150 g/l HCl) at room temperature for 15 s

room temperature for 15 s A.1.6.2

A.1.6.2 Rinse with mains water, having immersed the sample completely in deionised waterRinse with mains water, having immersed the sample completely in deionised water

A.1.6.3

A.1.6.3 Observe the film of water which runs over the sample when it is held vertically for 15 s to 20 s. The waterObserve the film of water which runs over the sample when it is held vertically for 15 s to 20 s. The water shall run over the surface evenly. The water film shall not be broken

shall run over the surface evenly. The water film shall not be broken

A.1.6.4

A.1.6.4 If the water film test is not positive, increase the degreasing time. The samples shall be regarded asIf the water film test is not positive, increase the degreasing time. The samples shall be regarded as unusable if a total degreasing time of over 30 min is required

unusable if a total degreasing time of over 30 min is required

A.1.7

A.1.7 Permeation Permeation test test procedureprocedure

Following preparation, fix the test sample on an electrolysis machine, the lower and upper parts of which shall be Following preparation, fix the test sample on an electrolysis machine, the lower and upper parts of which shall be made of transparent polymethyle metacrylate in the form of a funnel, having an aperture 40 mm in diameter at the made of transparent polymethyle metacrylate in the form of a funnel, having an aperture 40 mm in diameter at the level of the sample (on both the upper surface and lower surface of the sample).

level of the sample (on both the upper surface and lower surface of the sample).

Connect the lower part to a capillary tube having an internal diameter of 1 mm ± 0,1 mm (see Figure A.2). Connect the lower part to a capillary tube having an internal diameter of 1 mm ± 0,1 mm (see Figure A.2). Fill the lower part and the capillary tube with coloured or not coloured water.

Fill the lower part and the capillary tube with coloured or not coloured water.

Fill the upper part with the electrolytic solution mentioned above. The test sample shall constitute the cathode and a Fill the upper part with the electrolytic solution mentioned above. The test sample shall constitute the cathode and a perforated platinum disc the anode.

perforated platinum disc the anode.

The electrolysis current (6 V, d.c., current density 0,125 A/cm

The electrolysis current (6 V, d.c., current density 0,125 A/cm22) shall be supplied by a rectifier. Immerse a glass coil) shall be supplied by a rectifier. Immerse a glass coil in the electrolyte and connect it to a circuit with a thermostat in order to maintain a constant temperature of in the electrolyte and connect it to a circuit with a thermostat in order to maintain a constant temperature of 25 °C ± 0,5 °C.

25 °C ± 0,5 °C.

Maintain the contact between the sample and the electrolyte for at least 10 min in order for it to reach the correct Maintain the contact between the sample and the electrolyte for at least 10 min in order for it to reach the correct temperature, this time being called the “stabilisation” time.

temperature, this time being called the “stabilisation” time.

Adjust the starting level of the liquid in the capillary tube using a piston in the lower part of the apparatus. Adjust the starting level of the liquid in the capillary tube using a piston in the lower part of the apparatus.

Alter a stabilisation time of 10 min, establish the electrolysis current, this is the initial time of the permeation curve. Alter a stabilisation time of 10 min, establish the electrolysis current, this is the initial time of the permeation curve.

On the upper surface of the test sample, electrolysis shall cause supersaturation of hydrogen. Part of this hydrogen On the upper surface of the test sample, electrolysis shall cause supersaturation of hydrogen. Part of this hydrogen shall pass through the sheet and displace the liquid by an equivalent volume.

shall pass through the sheet and displace the liquid by an equivalent volume.

The volume of hydrogen which has passed through is recorded by the level of liquid in the capillary tube, followed The volume of hydrogen which has passed through is recorded by the level of liquid in the capillary tube, followed by a photoelectric cell connected to a recording devise. On the basis of this recording, the start of the hydrogen by a photoelectric cell connected to a recording devise. On the basis of this recording, the start of the hydrogen passage (

passage (t t oo) may be established using the tangent method (Figure A.1).) may be established using the tangent method (Figure A.1).

Instead of the photo-electric method, one can also use an optical method, in which the time for the appearance of Instead of the photo-electric method, one can also use an optical method, in which the time for the appearance of the first H

the first H22 at the back side of the sheet steel sample is measured ( at the back side of the sheet steel sample is measured ( t t oo). A third method is using a Hydrogen sensor). A third method is using a Hydrogen sensor

at the back side. at the back side.

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Key Key

X time X time Y

Y hydrogen hydrogen volumevolume 1

1 charging charging periodperiod 2

2 transition transition statestate 3

3 stationary stationary statestate 4

4 permeation permeation timetime

Figure A.1 — Permeation curve Figure A.1 — Permeation curve

A.1.8 Evaluation A.1.8 Evaluation

Calculate the hydrogen permeation value using the following formula: Calculate the hydrogen permeation value using the following formula:

²² 15 15 ₀₀ 1 1 d d t t TH TH == (A.1)(A.1) or or ²² 0 0 2 2 d d t t TH TH == (A.2)(A.2) where where —

— t t oo is the hydrogen permeation time in minutes (precision of 0,1 min) is the hydrogen permeation time in minutes (precision of 0,1 min)

—

— d d is the sheet thickness in mm (precision of 0,01 mm). is the sheet thickness in mm (precision of 0,01 mm). The minimum

The minimum TH TH 11 value is 100 according to Formula (A.1) and the minimum value of value is 100 according to Formula (A.1) and the minimum value of TH TH 22 is 6,7 according to is 6,7 according to

Formula (A.2) in order to have satisfactory resistance to fish scaling. Formula (A.2) in order to have satisfactory resistance to fish scaling.

For boron and titanium steels, experience shows that given our current level of knowledge no reliable correlation For boron and titanium steels, experience shows that given our current level of knowledge no reliable correlation can be made between permeation time and the appearance of fish scaling. For these steels, interpretation of the can be made between permeation time and the appearance of fish scaling. For these steels, interpretation of the results of the hydrogen permeation test shall be the subject of agreement at the time of ordering.

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Key Key

1

1 photo photo electric electric sensorsensor 2

2 measuring measuring capillarycapillary 3

3 electrolysis electrolysis containercontainer 4

4 test test sheetsheet 5

5 continuous continuous recorderrecorder 6

6 bath bath with with thermostatthermostat 7

7 feed feed tanktank 8 piston 8 piston 9

9 level level trackertracker

Figure A.2 — Apparatus for recording the hydrogen permeability of sheets Figure A.2 — Apparatus for recording the hydrogen permeability of sheets

A.2 Fish scaling test using special enamel

In order to determine resistance to fish scaling, another test may be used. A laboratory enamelling process with In order to determine resistance to fish scaling, another test may be used. A laboratory enamelling process with fixed parameters and using special enamel for the fish scaling test may be admissible.

fixed parameters and using special enamel for the fish scaling test may be admissible. Generally, an enamel thickness of 100

Generally, an enamel thickness of 100 μm is applied. The enamel adherence should be poor: level 3 to 5. Visualμm is applied. The enamel adherence should be poor: level 3 to 5. Visual examination for fish scaling should be carried out 24 h after the enamel has been fired.

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Annex B

(normative)

Method for determining mass loss (iron loss)

Method for determining mass loss (iron loss) due to pickling for steel

due to pickling for steel

grades for direct

grades for direct enamelling in accordance with 5.4.2

enamelling in accordance with 5.4.2

B.1 Principle

A

A test test specimen specimen is is pickled pickled in in sulphuric sulphuric acid acid (70 g/l) (70 g/l) with with a a specific specific concentration concentration of of FeFe2+2+. The loss of mass is. The loss of mass is measured and converted into g/m

measured and converted into g/m22 of surface of the sheet. of surface of the sheet.

B.2 Apparatus

—

— Kitchen Kitchen paper.paper. —

— High High precision precision balance balance (precision (precision to to 1 1 mg).mg).

—

— One litre One litre beaker, low beaker, low form, external form, external diameter 106 diameter 106 mm, height mm, height 145 mm.145 mm. —

— Heating Heating plate plate with with magnetic magnetic stirrer.stirrer.

—

— Laboratory Laboratory thermostat.thermostat. —

— Glass Glass hooks.hooks. — Sprayer. — Sprayer.

—

— Hydrochloric Hydrochloric acid, acid, analytical analytical quality.quality. —

— Sulphuric Sulphuric acid, acid, analytical analytical quality.quality. —

— Steel Steel sheet sheet to to be be tested.tested.

—

— Highly Highly deionised deionised water, water, maximum maximum conductivity conductivity of of 3030 µµS/crn.S/crn. —

— Calibrated Calibrated thermometer.thermometer. —

— Highly alkaliHighly alkaline degreasing ne degreasing agent, suitable agent, suitable for steel for steel sheets, containing sheets, containing silicates silicates (Baths No. (Baths No. 1 and 1 and 3).3).

—

— Alkaline Alkaline solution for solution for Bath No. Bath No. 9 (Henkel 9 (Henkel P3 T320 P3 T320 or similar or similar product).product). —

— Electric Electric hot hot air air dryer.dryer.

B.3 Sampling

The size of the sample sheet shall be 100 mm × 100 mm. Flat undeformed samples shall be used and shall be The size of the sample sheet shall be 100 mm × 100 mm. Flat undeformed samples shall be used and shall be taken from a point at least 150 mm from the edge of the coil.

taken from a point at least 150 mm from the edge of the coil.

Only samples without traces of corrosion, or mechanical damage on their surface shall be used. They shall not Only samples without traces of corrosion, or mechanical damage on their surface shall be used. They shall not have any burr. A 6 mm diameter hole shall be made for the hooks.

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B.4 Preparation

The test pieces shall be dried and cleaned with the kitchen paper. The test pieces shall be dried and cleaned with the kitchen paper.

B.5 Weighing

The test piece shall be weighed on an analytical balance to the nearest mg (value P1). The test piece shall be weighed on an analytical balance to the nearest mg (value P1).

B.6 Cleaning

Bath No. 1

Highly alkaline product 30 g/l ± 5 g/l containing silicates, suitable for steel sheets. Highly alkaline product 30 g/l ± 5 g/l containing silicates, suitable for steel sheets.

Fill the preparation bath with deionised water. Change the bath daily. Use glass hooks for securing the samples. Fill the preparation bath with deionised water. Change the bath daily. Use glass hooks for securing the samples. Set the bath temperature between 70 °C and 75 °C; carry out degreasing for 5 min ± 15 s, stirring with a magnetic Set the bath temperature between 70 °C and 75 °C; carry out degreasing for 5 min ± 15 s, stirring with a magnetic stirrer.

stirrer. Bath No. 2

By spraying (or immersion) with mains water for 30 s. By spraying (or immersion) with mains water for 30 s. Bath No. 3

Identical to Bath No. 1, but with 20 g/l ± 5 g/l of degreasing agent. Identical to Bath No. 1, but with 20 g/l ± 5 g/l of degreasing agent. Bath No. 4

By spraying (or immersion) with mains water at 65 °C for 30 s. By spraying (or immersion) with mains water at 65 °C for 30 s. Bath No. 5

Bath No. 5: Cool rinsing: Cool rinsing

In running water for 2 min. In running water for 2 min.

B.7 Checks on degreasing

B.7 Checks on degreasing quality

quality

•• After Bath After Bath No. 5, No. 5, take a take a sample as sample as a control a control sample and sample and treat in treat in the following the following way way (this control (this control sample will sample will notnot be used to determine the mass loss due to pickling).

be used to determine the mass loss due to pickling).

•• Immerse the Immerse the control sample control sample in a in a 10 10 % to 15 % to 15 % (mass fraction) % (mass fraction) solution of solution of hydrochloric acid hydrochloric acid (100 (100 g/l to g/l to 150 150 g/lg/l HCL) at room temperature for 15 s.

HCL) at room temperature for 15 s.

•• Rinse Rinse with with mains mains water, water, alter alter having having immersed immersed the the sample sample completely completely in in deionised deionised water.water.

•• Observe the Observe the film of wfilm of water which ater which runs over runs over the sample wthe sample when it hen it is held is held vertically for vertically for 15 s 15 s to 20 to 20 s. The s. The water shallwater shall run over the surface evenly. The water film shall not be broken.

run over the surface evenly. The water film shall not be broken.

•• If the If the water film water film is not is not positive, increase positive, increase the degreasing the degreasing time. The time. The samples shall samples shall be regarded be regarded as unusable as unusable if aif a total degreasing time of over 30 min is required.

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B.8 Pickling

Bath No. 6

Bath No. 6: Temperature setting: Temperature setting

Immerse the test pieces in a water bath at 70 °C. Immerse the test pieces in a water bath at 70 °C. Bath No. 7

Bath No. 7: Pickling: Pickling

Pickling condition: 70 g/l of H

Pickling condition: 70 g/l of H22SOSO44, 70 °C ± 0,3 °C, 7 min ± 5 s, stir with a magnetic stirrer., 70 °C ± 0,3 °C, 7 min ± 5 s, stir with a magnetic stirrer.

Fe

Fe2+2+ concentration: 2 g/l ± 0,2 g/l. concentration: 2 g/l ± 0,2 g/l.

Prepare the bath in the following way: add 40 ml of H

Prepare the bath in the following way: add 40 ml of H22SOSO44 (density 1,84) to 150 ml of deionised water. Then, make (density 1,84) to 150 ml of deionised water. Then, make

up to 1000 ml with water. Having increased the temperature of the solution to the pickling temperature of 70 °C, up to 1000 ml with water. Having increased the temperature of the solution to the pickling temperature of 70 °C, dissolve 2 g ± 0,2 g of the steel sheet identical to the sheet to be tested having been subjected to treatments C6 dissolve 2 g ± 0,2 g of the steel sheet identical to the sheet to be tested having been subjected to treatments C6 and C7 (dissolution approximately 20 min.) to attain an Fe

and C7 (dissolution approximately 20 min.) to attain an Fe2+2+ concentration concentration of of 2 2 g/l g/l ± ± 0,2 0,2 g. g. Check Check thethe concentrations of sulphuric acid and Fe

concentrations of sulphuric acid and Fe2+2+..

Change the pickling bath after pickling a maximum of three test pieces. Do not use the new bath more than three Change the pickling bath after pickling a maximum of three test pieces. Do not use the new bath more than three days alter it has been prepared.

days alter it has been prepared. Bath No. 8

Spraying (or immersion) in mains water for 15 s. Spraying (or immersion) in mains water for 15 s. Bath No. 9

Bath No. 9: Neutralisation: Neutralisation

Immerse the samples in the alkaline solution (for example, 6 g/l of Na

Immerse the samples in the alkaline solution (for example, 6 g/l of Na22COCO33 ± 0,7 g/l of Na ± 0,7 g/l of Na22BB440077, at 50 °C, for 2 min)., at 50 °C, for 2 min).

Bath No. 10

Spraying (or immersion) in mains water at 65 °C for 30 s. Spraying (or immersion) in mains water at 65 °C for 30 s.

B.9 Drying

Dry with an electric hot air drier. Dry with an electric hot air drier.

B.10 Weighing

After cooling to room temperature, weigh the test pieces immediately (value P After cooling to room temperature, weigh the test pieces immediately (value P22).).

B.11 Evaluation

Calculate the loss due to pickling P (g/m

Calculate the loss due to pickling P (g/m22/surface) on the basis of the difference in the two weights divided by the/surface) on the basis of the difference in the two weights divided by the total surface area of the test piece (0,02 m

total surface area of the test piece (0,02 m22):):

)) // ²² // (( 02 02 ,, 0 0 2 2 1 1 P P _g_g _m_m _surface_surface P P P P == −−

Indicate the values of each test and the mean obtained on the basis of not less than 3 test pieces. A maximum Indicate the values of each test and the mean obtained on the basis of not less than 3 test pieces. A maximum scatter of 10 % is permissible. If it is greater, repeat the test.

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Annex C

(normative)

Method for determining the adherence level

Method for determining the adherence level of enamel applied to a steel

of enamel applied to a steel

sheet

C.1 Field of application

The test pieces shall be flat, not deformed and have a thickness of between 0,60 mm and 3 mm. The test pieces shall be flat, not deformed and have a thickness of between 0,60 mm and 3 mm.

C.2 Principle

The sample of enamelled sheet shall be deformed by a punch with an hemispheric tip onto which falls a 1,5 kg The sample of enamelled sheet shall be deformed by a punch with an hemispheric tip onto which falls a 1,5 kg mass, dropped from a height which is a function of the thickness of the sheet prior to enamelling.

mass, dropped from a height which is a function of the thickness of the sheet prior to enamelling.

C.3 Apparatus

—

— Impact Impact testing testing machine machine as as shown shown in in Figure CFigure C.1..1. —

— Document showing the Document showing the reference photos of the reference photos of the five adherence levels five adherence levels of each of thof each of the three types e three types (conventionaI(conventionaI ground coat enamelling, conventional ground coat enamelling + white cover coat and direct-on vitreous ground coat enamelling, conventional ground coat enamelling + white cover coat and direct-on vitreous enamelling) given in Figure C.2.

enamelling) given in Figure C.2.

C.4 Description of the apparatus

The impact testing machine is shown in Figure C.1. The impact testing machine is shown in Figure C.1.

The piece which strikes the punch shall have a mass of 1,5 kg. The piece which strikes the punch shall have a mass of 1,5 kg.

The punch tip shall be hemispherical and have a 22 mm diameter. The punch tip shall be hemispherical and have a 22 mm diameter.

The diameter of the hole punched into the base shall be 20,6 mm and the radius of the entrance to this hole shall The diameter of the hole punched into the base shall be 20,6 mm and the radius of the entrance to this hole shall be 2 mm.

be 2 mm.

C.5 Procedure

First clean the enamelled test sheet with kitchen paper and fix it between the base and the support. First clean the enamelled test sheet with kitchen paper and fix it between the base and the support. Position the 1,5 kg weight at height “

Position the 1,5 kg weight at height “hh”, which shall be a function of the thickness of the sheet prior to enamelling”, which shall be a function of the thickness of the sheet prior to enamelling and is given in Table C.1 below.

and is given in Table C.1 below.

Table C.1 — Drop height Table C.1 — Drop heighthh

0,6 mm 0,6 mm ≤≤ thickness thickness ≤≤ 0,8 mm 0,8 mm h =h = 300 mm 300 mm 0,8 mm < thickness 0,8 mm < thickness ≤≤ 1,2 mm 1,2 mm h =h = 500 mm 500 mm 1,2 mm < thickness 1,2 mm < thickness ≤≤ 3 mm 3 mm h =h = 750 mm 750 mm

BS EN 10209-2013--[2016-06-12--11-13-08 AM].pdf

BSI Standards Publication

BSI Standards Publication

Cold rolled low carbon steel

Cold rolled low carbon steel

flat products for vitreous

flat products for vitreous

enamelli

enamelli

ng —

ng —

T

T

echnic

echnic

al

al

delivery conditions

National foreword

National foreword

NORME EUROPÉENNE

NORME EUROPÉENNE

EUROPÄISCHE NORM

EUROPÄISCHE NORM

June 2013

June 2013

English Version

English Version

Cold rolled low carbon steel flat products for vitreous enamelling

Cold rolled low carbon steel flat products for vitreous enamelling

- Technical delivery conditions

- Technical delivery conditions

Contents

Contents

Page

Page

Foreword

Foreword

1 Scope

1 Scope

2

2 Normative

Normative references

references

3

3 Terms

Terms and

and definitions

definitions

4 Designation

4 Designation

5 Requirements

5 Requirements

5.1 Steelmaking and

5.1 Steelmaking and manufacturing processes

manufacturing processes

5.2 Method of deoxidation

5.2 Method of deoxidation

5.3 Chemical composition

5.3 Chemical composition

5.4 Suitability for vitreous enamelling

5.4 Suitability for vitreous enamelling

5.5 Delivery condition

5.5 Delivery condition

5.6 Choice of properties

5.6 Choice of properties

5.7 Mechanical

5.7 Mechanical properties

properties

5.8 Surface

5.8 Surface characteristics

characteristics

5.8.1 General

5.8.1 General

5.8.2 Surface

5.8.2 Surface appearance

appearance

5.8.3 Surface finish

5.8.3 Surface finish

5.9 Stretcher strain marks

_{June 2013}

_{June 2013}