1、BRITISH STANDARD AEROSPACE SERIES BSEN 2082-2:1991 Specification for Aluminium alloy forging stock and forgings Technical specification Part 2: Forging stock This European Standard EN 2082-2:1989 has the status of a British Standard.BS EN2082-2:1991 This British Standard was published under the auth
2、orityofthe Board of BSIandcomes into effect on 31 December 1990 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/61 Draft for comment 88/75600 DC ISBN 0 580 19160 5 Cooperating organizations The European Committee for Standardization, under whose
3、supervision this European Standard was prepared, comprises the national standards organizations of the following Western European countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y.
4、 France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxemburg Inspection du T
5、ravail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United
6、 Kingdom British Standards Institution Amendments issued since publication Amd. No. Date of issue CommentsBS EN2082-2:1991 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 Text of EN 2082-2 3 National appendix A Inside back cover National
7、appendix B Inside back coverBS EN2082-2:1991 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN2082 “Aerospace series. Aluminium alloy forging stock and forgings. Technical
8、 specification” Part2 “Forging stock”, published by the European Committee for Standardization (CEN). EN2082-2 was produced as a result of international discussion in which the UK took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of
9、 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, theEN title page, pages 2 to 4, an inside bac
10、k 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 EUROPENNE EUROPISCHE NORM EN 2082-2 November 1989 UDC: 669.715-4:621.73.04:629.7 Key
11、 words: Aircraft industry, forgings, die forgings, aluminium alloys, forging, marking English version Aerospace series Aluminium alloy forging stock and forgings Technical specification Part2: Forging stock Srie arospatiale Produits destins la forge, pices forges et pices matrices en alliages dalumi
12、nium Spcification technique Partie 2: Produits destins la forge Luft- und Raumfahrt Schmiedevormaterial und Schmiedestcke aus Aluminiumlegierungen Technische Lieferbedingungen Teil 2: Schmiedevormaterial This European Standard was accepted by CEN on 1988-11-03. CEN members are bound to comply with t
13、he requirements of CEN 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 CEN Central
14、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 CEN Central Secretariat has the same status as the
15、official versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Eu
16、ropen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1989 Copyright reserved to all CEN members Ref. No. EN2082-2:1989 EEN2082-2:1989 BSI 01-2000 2 Brief history This European Standard has been prepared by the European Association of Aero
17、space 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. Accordi
18、ng to the Common CEN/CENELEC Rules, 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 UnitedKingdom. Contents Page Brie
19、f history 2 1 Scope and field of application 3 2 References 3 3 Types of product 3 4 Dimensions and tolerances 3 5 Internal defects 3 6 External defects 3 7 Tensile test 3 8 Marking 3 Table Summary of requirements 4EN2082-2:1989 BSI 01-2000 3 1 Scope and field of application This standard specifies
20、the particular requirements for forging stock intended for the manufacture of forgings in aluminium alloys and shall be used in conjunction with EN2082-1. 2 References EN 2002-1, Aerospace series Test methods for metallic materials Part1 Tensile testing at ambient temperature 1) . EN 2070-7, Aerospa
21、ce series Aluminium and aluminium alloy wrought products Technical specification Part7 Wrought forging stock. EN 2082-1, Aerospace series Aluminium alloy forging stock and forgings Technical specification Part1 General requirements. 3 Types of product The products are either wrought forging stock or
22、 cast forging stock. For wrought forging stock EN2070-7 is applicable. For cast forging stock the following clauses are applicable. 4 Dimensions and tolerances The dimensions and tolerances shall be defined by agreement between the manufacturer and the purchaser. The frequency of examination adopted
23、 by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 5 Internal defects The product shall not contain defects prejudicial to further working. Unless otherwise specified by the purchaser on the order or in the inspection schedule, the method of inspectio
24、n (e.g.macrography, fracture and/or ultrasonic inspection) and acceptance criteria shall be at the option of the manufacturer. The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 6 External defects The surface of pro
25、ducts shall be free from defects considered prejudicial to further working. Surface defects can be removed by local dressing provided the product remains within the specified dimensional tolerances. Products supplied in machined condition shall be examined subsequent to metal removal. Each product s
26、hall be visually examined. 7 Tensile test Where the material standard specifies tensile properties, tensile tests shall be carried out on each cast in conformity with EN2002-1 on a sample forged to a thickness of25mm to30mm with a maximum forge reduction of4:1. The sample shall be heat-treated in co
27、nformity with the EN material standard. Tests shall be performed on proportional round test pieces in accordance with EN2002-1. Sampling frequency shall be in accordance with the Table. The results shall meet the requirements of the relevant material standard. 8 Marking Unless otherwise specified on
28、 the order, all products shall bear the following identification marking: Material standard Cast number Ingot number Delivery condition if applicable Manufacturers and plants identification Inspection stamp Position of delivered product in the cast ingot, where applicable. Identification marking sha
29、ll be hard stamped at least once on each product. The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 1) In preparationEN2082-2:1989 4 BSI 01-2000 Table Summary of requirements Requirement Clause Product Inspection/t
30、esting Method Standard Frequency Dimensions 4 All See clause4 Internal defects 5 All See clause5 External defects 6 All Visual 100% Tensile test 7 All Tensile EN 2002-1 1 test per cast Marking 8 All Visual See clause8BS EN2082-2:1991 BSI 01-2000 National appendix A The United Kingdom participation i
31、n the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/61 upon which the following bodies were represented: Aluminium Federation British Forging Industry Association British Investment Casting Trade Association British
32、 Steel Industry Copper Development Association Department of Trade (National Physical Laboratory) Light Metal Founders Association Ministry of Defence Society of British Aerospace Companies Limited National appendix B The British Standards corresponding to the European Standards referred to in the t
33、ext are identical in number and title to those given in clause2.BS EN 2082-2:1991 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the interna
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