BRITISH STANDARD
BS EN
875: 1995
Destructive tests on
welds in metallic
materials —
Impact tests —
Test specimen location,
notch orientation and
examination
The European Standard EN 875:1995 has the status of a British Standard
This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on
15 December 1995 © BSI 03-1999
The following BSI references relate to the work on this standard:
Committee reference WEE/2 Draft for comment 92/82867 DC ISBN 0 580 25311 2
Committees responsible for this
British Standard
The preparation of this British Standard was entrusted to Technical Committee WEE/2, Welding tests, upon which the following bodies were represented:
Aluminium Federation
Association of Consulting Scientists
British Constructional Steelwork Association Ltd. British Iron and Steel Producers’ Association Electricity Association
Health and Safety Executive Institution of Structural Engineers Lloyd’s Register of Shipping Ministry of Defence
Power Generation Contractors Assocition [PGCA (BEAMA Ltd.)] TWI
Welding Manufacturers’ Association (BEAMA Ltd.)
Amendments issued since publication
BS EN 875:1995
© BSI 03-1999 i
Contents
Page
Committees responsible Inside front cover
National foreword ii
Foreword 2
Text of EN 875 3
ii © BSI 03-1999
National foreword
This British Standard has been prepared by Technical Committee WEE/2 and is the English language version of EN 875:1995 Destructive tests on welds in
metallic materials — Impact tests — Test specimen location, notch orientation and examination published by the European Committee for Standardization (CEN).
EN 875 was produced as a result of international discussions in which the United Kingdom took an active part.
BS EN 875:1995 supersedes tests detailed in BS 709:1983 which have been deleted by amendment.
A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application.
Compliance with a British Standard does not of itself confer immunity from legal obligations.
Cross-references
Publication referred to Corresponding British Standard
EN 10045-1 BS EN 10045 Charpy impact tests on metallic materials Part 1:1990 Test method (V- and U- notches)
Summary of pages
This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
EN 875
August 1995
ICS 25.160.40Descriptors: Welding, welded joints, butt joints, metals, destructive tests, bend tests, impact tests, notch strength, designation
English version
Destructive tests on welds in metallic materials — Impact
tests — Test specimen location, notch orientation and
examination
Essais destructifs des soudures sur matériaux
métalliques — Essai de flexion par choc —
Position de l’éprouvette, orientation de
l’entaille et examen
Zerstörende Prüfung von
Schweißverbindungen an metallischen
Werkstoffen — Kerbschlagbiegeversuch —
Probenlage, Kerbrichtung und Beurteilung
This European Standard was approved by CEN on 1995-07-01. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CEN
European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels
© 1995 Copyright reserved to CEN members
© BSI 03-1999
2
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 121, Welding, of which the secretariat is held by DS.
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 February 1996, and conflicting national standards shall be withdrawn at the latest by February 1996. According to the CEN/CENELEC Internal
Regulations, the following counries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
Contents
Page Foreword 2 1 Scope 3 2 Normative reference 3 3 Principle 3 4 Method of denomination 3 4.1 Lettering system 3 4.2 Characters 3 4.3 Additional information 3 5 Examples of denomination 3 6 Examination 3 7 Test report 4Annex A (informative) Test report 9
Figure 1 — Typical examples
of denominations 8
Table 1 — Notched face parallel to the
surface of the test piece (S position) 5
Table 2 — Notched face perpendicular to
the surface of the test piece (T position) 6 Table A.1 — Impact test in accordance
EN 875:1995
© BSI 03-1999 3
1 Scope
This standard specifies mainly the method to be used when describing test specimen location and notch orientation for the testing and reporting of impact tests on welded butt joints.
This standard applies to impact tests on metallic materials in all forms of product made by any fusion welding process.
It is used in addition to EN 10045-1 and includes test specimen denomination and additional reporting requirements.
2 Normative reference
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated
references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to applies. EN 10045-1, Metallic materials — Charpy impact
test — Part 1: Test method.
3 Principle
Impact testing shall be in accordance with EN 10045-1. The test temperature, location, type and size of test specimen, and notch orientation shall be in accordance with the relevant application standard.
In addition to the requirements of EN 10045-1, the notch position may be located by macroetching.
4 Method of denomination
4.1 Lettering system
The denomination is based on a lettering system to describe the type, location and notch orientation and a numbering system to show the distance (in millimetres) of the notch from reference lines (RL). The method of denomination is shown in Table 1 and Table 2. The test specimen shall be taken from the welded joint such that its longitudinal axis is at right angles to the weld length.
4.2 Characters
The denomination comprises the following characters:
4.3 Additional information
In cases where this simple denomination does not sufficiently define the location or notch orientation, a sketch referring to the weld procedure should be provided.
5 Examples of denomination
Examples of denominations are given in Table 1 and Table 2 and Figure 1.
6 Examination
The test specimens designated by this standard shall be tested in accordance with EN 10045-1. 1st character U: Charpy U notch,
V: Charpy V notch;
2nd character W: notch in the weld metal; the reference line is the centre line of the weld at the position of the test specimen,
H: notch in the heat affected zone; the reference line is the fusion or the joint line (notch will include HAZ);
3rd character S: notched face parallel to the surfacea,
T: notch through the thickness; 4th character a: the distance of the centre of the
notch from the reference line (if a is at the centre line of the weld, a = 0 which should be recorded); 5th character b: the distance from the weld
joint face sideb to the nearer face
of the test specimen (if b is at the surface of the weld, b = 0 which should be recorded).
a This orientation is equivalent to the denomination “surface
notch” used in fracture mechanics testing.
b In the case of double V, K or similar welds, the face side is the
side which contains the larger width of the weld or from which the welding energy was first applied.
4 © BSI 03-1999
7 Test report
The test report shall include the following
information in addition to that given in EN 10045-1: — reference to this standard;
— test specimen denomination; — sketch if required;
— type and dimensions of imperfections observed;
— other information as required by the application standard and/or by agreement between the contracting parties.
An example of a typical test report is given in Annex A.
E
N
87
5:1
99
5
© B S I 0 3-19 99 5Table 1 — Notched face parallel to the surface of the test piece (S position)
Reference Centre of the weld Reference Fusion/joint line Denomination Representation Denomination Representation
VWS a/b VHS a/b
(pressure weld)
VHS a/b (Fusion weld)
87
5:1
99
5
© B S I 0 3-19 99Denomination Representation Denomination Representation
VWT O/b VHT O/b
E
N
87
5:1
99
5
© B S I 0 3-19 99 7Table 2 — Notched face perpendicular to the surface of the test piece (T position)
Reference Centre of the weld Reference Fusion/joint line Denomination Representation Denomination Representation
VWT O/b VHT a/b
8 © BSI 03-1999
EN 875:1995
© BSI 03-1999 9
Annex A (informative)
Test report
Table A.1 — Impact test in accordance with EN 875
Test
specimen Denomination dimensionType and temperatureTest toughnessImpact absorbed Impact energy Remark No. mm ûC J/cm2 J Location of fracturea Type of fracturea
Type and size of imperfection
a if required
BS EN 875:1995
© BSI 03-1999
List of references
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