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Group. The precision company SURFACE TECHNOLOGIES INTERNATIONAL. Aeronautics. Surface solutions by STI Group. English


Academic year: 2021

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The precision company




Surface solutions by STI Group

Surface solutions by STI Group



Surfaced by STI Group» is recognised world-wide as synonymous with high-end surface solutions, a wide range of technologies and comprehensive service. STI France SAS is a total supplier to the aviation industry and provides reliable and competent processing and surface coating of complex components. The company's many years of experience, its specifically developed technologies and comprehensive range of materials and processes enable it to deliver individually optimised and functional surface solutions to the highest quality and safety standards.

Successful components need to be functional, reliable and cost-effective. Therefore, the entire STI Group package is designed for your success – from development and preparation via coating and machining through to control, installation and decontamina-tion of the undercarriage, hydraulics and other aviadecontamina-tion industry components.

The range of technologies used by STI France SAS enables the company to make use of the potential of different materials. Processes include hard chrome surface treatment, cadmium plating, galvanising, nickel plating (sulphamate), poli-shing and passivating of stainless steel, as well as burnishing, Rilsan coating, manganese phosphate coating, silver coating, chro-mating (alodine 1200) and tin coating. STI France SAS provides a wide range of supporting services such as stress relief and

Leading competence in the entire process chain

Highest Functionality and Safety






Full end of range provision - Steel components for the aeronautic industry High-end surface treatment

technolo-gies for hydraulic systems, undercar-riages components and other aircraft parts.

Provision of STI France SAS


Machining Thermal

processing Machining Stress relief

Magnetical particle inspection

Shot peening Hard chrome plating

Stress relief Grinding Cadmium

plating Stress relief Painting


inspection Customer Penetrant


degassing, grinding, paint coating, S2-S4/P3-W2 nital, magnetic powder and penetration testing as well as salt spray testing. The company guarantees top quality, reliability and on-time delivery for these additional services.

As specialist for bespoke solutions, STI Group analyses your requirements and accurately specifies the necessary properties such as corrosion and wear resistance, friction coefficients, chemical resistance or adhesion, and carries them out within extremely tight tolerances. The table below shows a selection of coating systems specially designed for the aviation industry.

Exact specifications tailored to suit individual requirements

STI Group – Pioneers in Surface Technology

Application for the aeronautic industry

Applications Treatment Properties | Benefits Problems solved

Axle protectors hard chrome hardness, increased wear life cycle

Valve body hard chrome hardness wear Axe cadmium plating anti-corrosion corrosion Piston rilsan anti-corrosion oxidation

Piston rilsan friction wear

Body polishing decontamination elimination of impurities Swivel silvering resistance to corrosion, corrosion

high temperature

Aircraft nose Falcon antistatic painting conductivity flow of the electrostatic loads Engine components high temperature painting resistance corrosion


STI Group Surface solutions worldwide.

Wide range of technologies and comprehensive service

STI Group specialises in a wide range of processes which means that components are surface-treated to top quality standards, are reproducible and feature a long service life. Aircraft com-ponent surfaces are treated in compliance with the strict standards of the aviation industry and government authorities. STI France SAS provides numerous special processes and complete surface solutions including preparation and fini-shing treatments.

Surface technologies

Treatment Capacity Qualifications

Hard chrome plating 2,200 x 1,200 x 2,500 Liebherr Aerospace, Messier-Bugatti, Messier-Dowty, Ratier Figeac, SNECMA, Sogerma, Turbomeca Cadmium plating 550 x 700 x 800 Airbus, Casa, Messier-Bugatti, Messier-Dowty, Ratier

Figeac, Turbomeca Silvering 600 x 400 x 300 Casa, Turbomeca Tinning 600 x 400 x 300 Casa, Turbomeca Sulfamate nickel plating 600 x 400 x 300 Turbomeca

Resurfacing and passivation 550 x 500 x 300 Airbus, Liebherr Aerospace, Messier-Bugatti, Messier-Dowty, of stainless steel Ratier Figeac, Turbomeca

Rilsan 450 x 450 x 450 Messier-Dowty, Messier-Bugatti

Manganese phosphatation 1,000 x 450 x 400 Airbus, Casa, Messier-Bugatti, Messier-Dowty, Ratier Figeac, Turbomeca

Chemical burnishing 1,000 x Ø 370 Hispano-Suiza, Messier-Dowty, Messier-Bugatti, Turbomeca Alodine 1200 600 x 400 x 800 Messier-Bugatti, Messier-Dowty, Ratier Figeac, Turbomeca Magnetic particle inspection 800 x Ø 150 Airbus, Messier-Bugatti, Messier-Dowty, Nadcap, Ratier Figeac,


Penetrant inspection 800 x 800 x 600 Airbus, Messier-Bugatti, Messier-Dowty, Nadcap, Ratier Figeac, Turbomeca

Zinc plating 4,000 x 370 x 1,000 Alstom, Messier-Dowty Nital etching 1,300 x 400 x 400 Messier-Bugatti, Messier-Dowty Stress and vapour relief 1,000 x 1,000 x 1,000

Sandblasting 600 x 600 x 500 + 12m Grinding on request

Hardness measuring on request Means of inspection on request

Antistatic painting 4,000 x 4,000 x 2,500 Dassault, Airbus

High temperature painting 1,000 x 1,000 x 1,500 Turbomeca, Messier, Cesa Diverse paintings 6,000 x 6,000 x 1,500 Alstom, Safran, EADS, Thales Further informations on request or www.sti-surface.com



STI Group Factors of Success

STI Group offers you individual overall solutions – from comprehen sive analyses and consulting, development and innovation to the actual treatment process, mechanical processing, the final quality check and transport.

Automotive, Aviation, Defense Technology, Film, Foil, Food, General Industries, Hydraulics, Marine & Powertrain, Paper, Power

Generation, Print, Textile, Tools etc.

Hard chrome (including Triplex, structural chrome and Nanochrom), electroless nickel, galvanic nickel, hybrid layers, dispersion layers, thermal spraying (HVOF, plasma, wire flame spraying), Dry Coating (plasma nitriding, PVD, PACVD), painting, grinding, polishing, milling, turning, boring. Various special processes are available on request.

STI Group surface treatments stand for precision, functionality and quality. STI Group guarantees the required process safety to achieve the narrowest tolerance ranges and create tailor-made, reproducible surfaces.

STI Group develops innovative, tailor-made surface solutions for components up to 6,000 mm in diameter, 27,000 mm in length and 64 tons weight.

One of the core competencies of STI Group is the coating of components with complex geometries. STI freeform surfaces are renowned for their optimized characteristics, the highest level of quality and reproducibility.

STI Group is your specialist for custom-designed surfaces, both for individual parts and series. Know-how, experience and modern infrastructure guarantee optimum results.

STI Group carries out systematic application-oriented and pure research and development. Our focus is on high-performance, individually optimized surface solutions for you and your success. Individual Solutions

Industrial Areas

Range of technologies

Quality and Precision

S to XXL Components

Complex Geometries

Single Parts and Series


Hartchrom AG

Hartchrom Defense Technology AG

Hartchrom Inc.

Hartchrom Schoch GmbH

Hartchrom Teikuro Automotive GmbH

STI France SAS Schulstrasse 70 CH – 9323 Steinach T +41 71 447 97 97 F +41 71 447 97 92 sti@sti-surface.com Schulstrasse 70 CH – 9323 Steinach T +41 71 447 97 97 F +41 71 447 97 92 sti@sti-surface.com 25 Gibson Street Watervliet NY 12189-3342 USA sti.us@sti-surface.com Mühlackerstrasse 10 DE – 75447 Sternenfels-Diefenbach T +49 7043 95 32 0 F +49 7043 95 32 299 sti.germany@sti-surface.com Mühlackerstrasse 10 DE – 75447 Sternenfels-Diefenbach T +49 7043 95 32 500 F +49 7043 95 32 599 sti.germany@sti-surface.com BP 17, ZI Le Touya FR – 64260 Arudy T +33 559 05 60 34 F +33 559 05 64 96 sti.france@sti-surface.com T +1 518 880 04 00 F +1 518 880 04 50

STI France SAS

STI France SAS

STI Precision Machining (Changshu) Co., Ltd.

STI Surface Technologies International Holding AG


STI France SAS

Route de Pau, ZA du Gabarn FR – 64870 Oloron-Escout T +33 559 39 71 01 F +33 559 39 22 33 sti.france@sti-surface.com

ZA Ambroise

FR – 40390 Saint Martin de Seignanx T +33 559 56 57 58

F +33 559 56 10 43 sti.france@sti-surface.com

Xiang Yuan Rd. 16

South-east Economic Development Zone CN – 215500 Changshu (Jiangsu Province) T +86 512 5290 6200 F +86 512 5290 6299 sti.china@sti-surface.com Schulstrasse 70 CH – 9323 Steinach T +41 71 447 97 97 F +41 71 447 97 92 sti@sti-surface.com BP 17, ZI Le Touya FR – 64260 Arudy T +33 559 05 60 34 F +33 559 05 64 96 sti.france@sti-surface.com


The precision company




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