1、BRITISH STANDARD AEROSPACE SERIES BS EN 2076-1:1991 Incorporating Amendment No. 1 Specification for Aluminium and magnesium alloy ingots and castings Technical specification Part 1: General requirements This European Standard EN2076-1:1989 has the status of a British Standard.BSEN2076-1:1991 This Br
2、itish Standard was published under the authority ofthe Board of BSI and comes into effect on 31January1991 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 19175 3 Cooperating organizations The European
3、Committee for Standardization, under 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 Standardiseringsraa
4、d Finland Suomen Standardisoimisliito, 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 Italian
5、o di Unificazione Luxemburg Inspection 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
6、 Association suisse de normalisation UnitedKingdom British Standards Institution Amendments issued since publication Amd. No. Date of issue Comments 7706 October 1993 Indicated by a sideline in the marginBSEN2076-1:1991 BSI 11-1999 i Contents Page Cooperating organizations Inside front cover Nationa
7、l foreword ii Brief history 2 Text of EN 2076-1 3 National appendix A Inside back cover National appendix B Inside back coverBSEN2076-1:1991 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 lan
8、guage version of EN2076 “Aerospace series. Aluminium and magnesium alloy ingots and castings. Technical specification.” Part 1: “General requirements”, including amendmentA1 published by the European Committee for Standardization (CEN). EN2076-1 was produced as a result of international discussion i
9、n which the UK 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. Summa
10、ry of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 6, 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
11、 on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2076-1 November 1989 + A1 October 1993 UDC 669.715-4:669.721.5-4:620.1:629.7 Keywords: Aircraft industry, castings, ingots, aluminium alloys, magnesium alloys, manufacturing, specifications, tests, inspection English ver
12、sion Aerospace series Aluminium and magnesium alloy ingots and castings Technical specification Part 1: General requirements (includes amendment A1:1993) Srie arospatiale Lingots et pices moules en alliages daluminium et de magnsium Spcification technique Partie 1: Exigences gnrales (inclut lamendem
13、ent A1:1993) Luft- und Raumfahrt Blcke und Gustcke aus Aluminium- und Magnesiumlegierungen Technische Lieferbedingungen Teil 1: Allgemeine Anforderungen (enthlt nderungen A1:1993) This European Standard was accepted by CEN on1988-07-20. CEN members are bound to comply with the requirements of CEN In
14、ternal 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 Secretariat or to any CEN
15、 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 official versions. CEN me
16、mbers 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 Europen de Normalisation Eu
17、ropisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1989 Copyright reserved to all CEN members Ref. Nr EN2076-1:1989 + A1:1993 EEN2076-1:1989 2 BSI 11-1999 Brief history This European Standard has been prepared by the European Association of Aerospace Manufactur
18、ers (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. According to the Common
19、 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. Foreword to Amendment 1 This Amend
20、ment 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 Amendment has successively received the approval of the National Associations and the Official Services of the member co
21、untries of AECMA, prior to its presentation to CEN. This Amendment was submitted for Formal Vote, and the result was positive. This Amendment shall be given the status of a national Amendment, either by publication of an identical text or by endorsement, at the latest by January1994, and conflicting
22、 national standards shall be withdrawn at the latest by January1994. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this Amendment: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway
23、, Portugal, Spain, Sweden, Switzerland, UnitedKingdom. Contents Page Brief history 2 1 Scope 3 2 Field of application 3 3 References 3 4 Definitions 3 5 Quality assurance 4 6 Manufacture 4 7 Traceability 4 8 Freedom from defects 4 9 Testing 4 10 Marking 5 11 Acceptance 5 12 Inspection and testing re
24、port 5 13 Protection against corrosion 5 14 Packing 5 15 Wording of orders 5EN2076-1:1989 BSI 11-1999 3 1 Scope This standard defines the general requirements for the manufacture, inspection and testing of aluminium and magnesium alloy ingots and castings. Particular requirements applicable to ingot
25、s and castings are defined in EN2076-2 and EN2076-3 respectively. Unless otherwise specified on the drawing, order or inspection schedule the reference to EN2076 only defines one quality level which is quality level3 inTable1 of EN2076-3. 2 Field of application Unless otherwise specified on the draw
26、ing, order or inspection schedule this standard shall be applied when referenced in the relevant EN material standard. By agreement between the purchaser and manufacturer it may also be applied to other materials or delivery conditions not covered by EN standards. The agreements shall be formalized
27、by reference to this standard on the drawing, order or inspection schedule. 3 References EN 2076-2, Aerospace series Aluminium and magnesium alloy ingots and castings Technical specification Part 2 Ingots for remelting. EN 2076-3, Aerospace series Aluminium and magnesium alloy ingots and castings Te
28、chnical specification Part 3 Pre-production and production castings. EN 2078, Manufacturing schedule, inspection schedule and inspection report General definitions Aerospace series. EN 2000, Aerospace series Quality assurance EN aerospace products Approval of the quality system of manufacturers. 4 D
29、efinitions 4.1 ingot semi-finished product intended for melting, obtained by solidification of liquid metal from a cast 4.2 Cast (term used for ingots) 4.2.1 metal taken from the same furnace or from the same ladle or from several furnaces and mixed in the same furnace or in the same ladle before po
30、uring 4.2.2 where a continuous melting process is used, a cast may be defined as metal taken from the furnace before the next following charge 4.3 melt (term used for castings) metal taken from the same furnace or from the same ladle, or from several furnaces and mixed in the same furnace or in the
31、same ladle before pouring 4.4 batch a batch consists of ingots for remelting or castings: of the same form and of the same nominal dimensions or of the same drawing number, and from the same cast for ingots or from the same melt for castings, and from the same heat treatment charge. 4.5 approved scr
32、ap approved scrap is defined as that scrap which arises from the casting manufacturers own production from material which is segregated and identified with certainty. It may include headers, runners and heavy fettling scrap, but shall exclude all small particles 4.6 precision castings castings produ
33、ced by an investment process or any similar process investment process castings: castings obtained by means of a process using moulds obtained from models in waste wax 4.7 sand castings castings made by a process involving the moulding of a pattern with a suitably bonded sand 4.8 chill castings cast
34、ings made by introducing molten metal by gravity or low pressure into a metal mould 4.9 pre-production castings castings produced to a particular design which qualify the method of manufacture and mould configuration and demonstrate that the requirements of the purchaser can be met 4.10 inspection s
35、chedule see EN2078EN2076-1:1989 4 BSI 11-1999 4.11 manufacturing schedule see EN2078 4.12 inspection and testing report see EN2078 4.13 “capability clause” certain test requirements can be met on the basis of the “capability clause” reference to “capability clause” signifies that sufficient evidence
36、 of a statistical nature with respect to the properties under consideration can be submitted to show that the requirements of the relevant standard will be met on the basis of a reduced amount of testing. Such action in no way reduces the obligations of the manufacturer to fulfil all requirements. I
37、f subsequent testing indicates that a product does not comply with the requirements the batch shall be rejected 5 Quality assurance See EN2000 6 Manufacture 6.1 Castings shall be made from ingots complying with the relevant material standard and EN2076-2. 6.2 Unless otherwise specified, the manufact
38、uring technique shall be at the discretion of the manufacturer. 6.3 Conformance with the requirements of the purchaser shall be demonstrated by the manufacture and inspection and testing of pre-production castings as required by EN2076-3. 6.4 The products shall be supplied in the heat treatment cond
39、ition specified in the material standard. If otherwise agreed or if there is more than one heat treatment condition in the material standard, the condition of supply shall be specified on the order or drawing. If a specific heat treatment temperature (value and tolerance) is stated, that temperature
40、 shall be mandatory. If a heat treatment temperature range is stated, a temperature within that range reduced by the furnace tolerances shall be selected to give the required properties. Unless otherwise specified, the charge shall be maintained at the temperature subject to the tolerances of 5 C fo
41、r the period stated. 7 Traceability Each product shall be identifiable as to its cast and melt and if appropriate, heat treatment batch at all stages of manufacture and delivery. 8 Freedom from defects The products shall be free from harmful defects to subsequent use and not withstanding previous ac
42、ceptance of products complying with this standard; any product that is found, at a later stage, to contain such defects may be rejected. 9 Testing The tests required by the material standard, the order, or inspection schedule, shall be made in accordance with the requirements of the appropriate test
43、 standard. If a test standard does not exist the method to be used shall be agreed between manufacturer and purchaser. Unless otherwise specified on the order, drawing or inspection schedule, the frequency of sampling shall be as given in EN2076-2 or EN2076-3. The location of test samples shall be a
44、s indicated on the drawing or inspection schedule. The test samples and associated test pieces shall be marked in such a manner as to ensure that their identity and location with respect to the product and the batch is maintained. 9.1 Chemical analysis 9.1.1 The chemical composition of the delivered
45、 product shall comply with the requirements of the relevant material standard. 9.1.2 The chemical composition of each cast and melt shall be determined. The samples taken for analysis shall be representative of the cast or the melt. The method of analysis shall be selected by the manufacturer but in
46、 case of dispute, the method set out in the relevant ISO standard shall be used. If no ISO standard exists, a fundamental method of chemical analysis shall be used. 9.1.3 Elements not quoted in the material standard shall not be intentionally added to the alloy without the agreement of the purchaser
47、 except for the purpose of fluxing or degassing. Precautions shall be taken to prevent their inclusion during manufacture and to avoid contamination. For special applications, such as modification, the purchaser, by agreement with the manufacturer, may set a limit to the amount of one or more such e
48、lements and may require the amount to be stated on the Certificate of Conformance. 9.1.4 No further additions shall be made to a cast or melt after the final analytical sample has been taken.EN2076-1:1989 BSI 11-1999 5 9.2 Mechanical tests See EN2076-3. 10 Marking Products shall be marked in accorda
49、nce with EN2076-2 for ingots and EN2076-3 for castings. 11 Acceptance If required by the order, the manufacturer shall inform the purchaser or his chosen agent of the planned dates for the extraction of samples and acceptance testing in order that these operations may be witnessed. 12 Inspection and testing report The manufacturer shall furnish with each delivery, a form of certificate conforming to the requirements of EN2078 stating the following: The manufacturers name and address, Contract and/or order nu
