BS-EN-2832-1993.pdf

BRITISH STANDARD AEROSPACE SERIES BS EN 2832:1993 Hydrogen embrittlement of steels Notched specimen test The European Standard EN 2832:1993 has the status of a British Standard UDC 669.14:621:793/794:620.172:629.7 BS EN 2832:1993 This British Standard, having been prepared under the direction of the Aerospace Standards Policy Committee (ACE/-), was published under the authority of the Standards Board and comes into effect on 15 May 1993 © BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/44 Draft for comment 90/75755 DC ISBN 0 580 22148 2 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following (CEN) countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation française de normalisation GermanyDeutsches Institut für Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portuguès da Qualidade SpainAsociación Española de Normalización y Certificación SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments BS EN 2832:1993 © BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 28323 National annex NA (informative) Committees responsibleInside back cover BS EN 2832:1993 ii © BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN 2832:1993, Aerospace series Hydrogen embrittlement of steels Notched specimen test published by the European Committee for Standardization (CEN). EN 2832 was produced as a result of international discussion in which the United Kingdom took an active part. 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. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 4, 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 2832 February 1993 UDC 669.14:621.793/794:620.172:629.7 Descriptors: Aircraft industry, steels, hydrogen embrittlement, tests, test specimens English version Aerospace series Hydrogen embrittlement of steels Notched specimen test Série aérospatiale Fragilisation des aciers par lhydrogène Essai par éprouvette entaillée Luft- und Raumfahrt Wasserstoffversprödung von Stählen Kerbzugversuch This European Standard was approved by CEN on 1993-02-19. 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 organizations 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 © 1993 Copyright reserved to CEN members Ref. No. EN 2832:1993 E EN 2832:1993 © BSI 12-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this standard has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. 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 August 1993, and conflicting national standards shall be withdrawn at the latest by August 1993. According to the CEN/CENELEC Internal Regulations, the following countries 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 United Kingdom. Contents Page Foreword2 1Scope3 2Apparatus3 3Test specimens3 4Procedure3 5Fault sanction3 6Test report3 Figure 14 Table 14 EN 2832:1993 © BSI 12-19993 1 Scope This standard specifies the method for the notched specimen test, which is used to assess the hydrogen embrittlement of steels during chemical or electrolytic surface treatments. It is applicable whenever referenced. 2 Apparatus Any device allowing a constant load to be applied to the test specimens may be used, i.e. direct load machines, dynamometric rings, etc. 3 Test specimens 3.1 Material and heat treatment They shall be identical with those of the parts. However, the purchaser may require to use a reference material and heat treatment. 3.2 Dimensions See Figure 1 and Table 1. 3.3 Surface treatment It shall be carried out as on the parts and ensure that the thickness of the deposit at the notch root is the same as that specified for the parts. 3.4 De-embrittlement It shall be carried out as for the parts. 4 Procedure The test specimens shall be subjected for 200 h, at ambient temperature, to an axial load equal to (75 ± 2) % of the tensile strength of a notched uncoated specimen. 5 Fault sanction No fracture is permissible before 200 h. 6 Test report It shall include the following: reference to this standard; reference numbers and types of the test specimens; nature of the coating; thickness of the coating; test result. EN 2832:1993 4 © BSI 12-1999 Table 1 Figure 1 Dimensions en millimetres Type DEGR1R2 nom.tol.nom.tol.nom.tol.min.max.nom.tol. 16,40 ± 0,03 9,07 ± 0,08 14+ 1 0 3,186,350,23 ± 0,013 24,526,3517,5+ 1 0 0,13 BS EN 2832:1993 © BSI 12-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/44 upon which the following bodies were represented: Aluminium Finishing Association Metal Finishing Association Ministry of Defence National Centre of Tribology Oil and Colour Chemists Association Paintmakers Association of Great Britain Ltd. Society of British Aerospace Companies Limited BS EN 2832:1993 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. 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