1、BRITISH STANDARD AEROSPACE SERIES BS EN 2076-2:1991 Specification for Aluminium and magnesium alloy ingots and castings Technical specification Part 2: Ingots for remelting This European Standard EN 2076-2:1989 has the status of a British StandardBSEN2076-2:1991 This British Standard was published u
2、nder the authorityofthe Board of BSIandcomes intoeffect on 31 January 1991 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference ACE/61 Draft for comment 88/73520 DC ISBN 0 580 19176 1 Cooperating organizations The European Committee for Standardization, u
3、nder whose 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 Standardisoimis
4、liito, r.y. 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 Insp
5、ection du Travail 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 normalisa
6、tion United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date of issue CommentsBSEN2076-2:1991 BSI 11-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 Text of EN 2076-2 3 National appendix A Inside back cover
7、 National appendix B Inside back coverBSEN2076-2:1991 ii BSI 11-1999 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 2076 “Aerospace series. Aluminium and magnesium alloy ingots and ca
8、stings. Technical specification.” Part 2: “Ingots for remelting”, published by the European Committee for Standardization (CEN). EN 2076-2 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 provis
9、ions 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, theEN title page,
10、 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 EUROPENNE EUROPISCHE NORM EN 2076-2 November 1989 UDC: 6
11、69.715-4:669.721.5-4:620.1:621.745.5:629.7 Key words: Aircraft industry, castings, ingots, aluminium alloys, magnesium alloys, specifications, defects, marking English version Aerospace series Aluminiumandmagnesiumalloy ingotsandcastings Technical specification Part 2: Ingots for remelting Srie aros
12、patiale Lingots et pices moules en alliages daluminium et de magnsium Spcification technique Partie 2: Lingots pour refusion Luft- und Raumfahrt Blcke und Gustcke aus Aluminium- und Magnesiumlegierungen Technische Lieferbedingungen Teil 2: Blcke zum Umschmelzen This European Standard was accepted by
13、 CEN on 1988-07-20. CEN members are bound to comply with the 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 st
14、andards may be obtained on application to the CEN 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 notif
15、ied to CEN 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, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKi
16、ngdom. CEN European Committee for Standardization Comit Europen 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. EN 2076-2:1989 EEN2076-2:1989 BSI 11-1999 2 Brief history This European Sta
17、ndard 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 co
18、untries of AECMA, prior to its presentation toCEN. According 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,
19、 Sweden, Switzerland and UnitedKingdom. Contents Page Brief history 2 1 Scope and field of application 3 2 References 3 3 Dimensions and tolerances 3 4 Internal defects 3 5 External defects 3 6 Chemical analysis 3 7 Marking 3EN2076-2:1989 BSI 11-1999 3 1 Scope and field of application This standard
20、specifies the particular requirements for ingots in aluminium or magnesium alloys intended for the manufacture of castings. This standard shall be used in conjunction with EN2076-1. 2 References EN 2076-1, Aerospace series Aluminium and magnesium alloy ingots and castings Technical specification Par
21、t 1 General requirements. 3 Dimensions and tolerances The form, mass, dimensions and tolerances of ingots shall be defined by agreement between the manufacturer and the purchaser. The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with th
22、e requirements. 4 Internal defects The ingots shall not contain defects prejudicial to their intended use. Unless otherwise agreed between the manufacturer and the purchaser and specified on the order or in the inspection schedule, test methods and acceptance criteria shall be at the option of the m
23、anufacturer. The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 5 External defects Ingots shall be visually examined and shall be free from corrosion, salt or slag inclusions, grease or any other foreign matter incl
24、uding paint, other than that approved for marking. The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 6 Chemical analysis See EN 2076-1. 7 Marking 7.1 Unless otherwise specified on the order, all products shall bear
25、 the following identification marking: Material standard, Cast number, Identification of the manufacturer and the plant, Such other marking as will ensure full identification. 7.2 Unless otherwise specified on the order, the method of marking shall be at the option of the manufacturer provided the m
26、arking is permanent. 7.3 The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements.4 blankBSEN2076-2:1991 BSI 11-1999 National appendix A The UnitedKingdom participation in the preparation of this European Standard was entr
27、usted 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 Steel Industry Copper Development Association Depar
28、tment of Trade (National Physical Laboratory) Light Metal Founders Association Ministry of Defence Society of British Aerospace Companies Limited National appendix B The British Standard corresponding to the European Standard referred to in the text is identical in number and title with that given i
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