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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 EN 2076-1:1989 has the status of a British Standard. BS EN 2076-1:1991 Thi
2、s British Standard was published under the authority of the Board of BSI and comes into effect 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 19175 3 Cooperating organizations The Eu
3、ropean Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards organizations of the following Western European countries. AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardisering
4、sraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano d
5、i Unificazione LuxemburgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociati
6、on suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.Date of issueComments 7706October 1993 Indicated by a sideline in the margin BS EN 2076-1:1991 BSI 11-1999i Contents Page Cooperating organizationsInside front cover National forewordii
7、 Brief history2 Text of EN 2076-13 National appendix AInside back cover National appendix BInside back cover BS EN 2076-1:1991 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 language version
8、of EN 2076 “Aerospace series. Aluminium and magnesium alloy ingots and castings. Technical specification.” Part 1: “General requirements”, including amendment A1 published by the European Committee for Standardization (CEN). EN 2076-1 was produced as a result of international discussion in which the
9、 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. Summary of pages
10、 This document comprises a front cover, an inside front cover, pages i and ii, the EN 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 on the in
11、side 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 version Aero
12、space 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 lamendement A1:19
13、93) 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 on 1988-07-20. CEN members are bound to comply with the requirements of CEN Internal R
14、egulations 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 member.
15、 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 members ar
16、e the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisch
17、es Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1989 Copyright reserved to all CEN members Ref. Nr EN 2076-1:1989 + A1:1993 E EN 2076-1:1989 2 BSI 11-1999 Brief history This European Standard has been prepared by the European Association of Aerospace Manufacturers
18、(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 CEN
19、/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 United Kingdom. Foreword to Amendment 1 This Amendmen
20、t 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 count
21、ries 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 January 1994, and conflicting n
22、ational standards shall be withdrawn at the latest by January 1994. 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, United Kingdom. Contents Page Brief history2 1Scope3 2Field of application3 3References3 4Definitions3 5Quality assurance4 6Manufacture4 7Traceability4 8Freedom from defects4 9Testing4 10Marking5 11Acceptance5 12Inspection and testing report5 13Protection again
24、st corrosion5 14Packing5 15Wording of orders5 EN 2076-1:1989 BSI 11-19993 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 ingots and castings are defined in
25、EN 2076-2 and EN 2076-3 respectively. Unless otherwise specified on the drawing, order or inspection schedule the reference to EN 2076 only defines one quality level which is quality level 3 in Table 1 of EN 2076-3. 2 Field of application Unless otherwise specified on the drawing, order or inspectio
26、n 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 by reference to this st
27、andard 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 Technical specification P
28、art 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 Definitions 4.1 ingot se
29、mi-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 pouring 4.2.2 where a con
30、tinuous 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 same ladle before pouri
31、ng 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 scrap approved scrap is de
32、fined 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 produced by an investment pr
33、ocess 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 castings made by introducin
34、g 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 schedule see EN 2078 EN
35、2076-1:1989 4 BSI 11-1999 4.11 manufacturing schedule see EN 2078 4.12 inspection and testing report see EN 2078 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 of a statistical
36、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. If subsequent testi
37、ng indicates that a product does not comply with the requirements the batch shall be rejected 5 Quality assurance See EN 2000 6 Manufacture 6.1 Castings shall be made from ingots complying with the relevant material standard and EN 2076-2. 6.2 Unless otherwise specified, the manufacturing technique
38、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 EN 2076-3. 6.4 The products shall be supplied in the heat treatment condition specified
39、 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 shall be manda
40、tory. 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 for the period st
41、ated. 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 acceptance of pro
42、ducts 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 standard. If a
43、 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 EN 2076-2 or EN 2076-3. The location of test samples shall be as indicated o
44、n 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 product shal
45、l 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 case of disp
46、ute, 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 except for t
47、he 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 elements and m
48、ay 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. EN 2076-1:1989 BSI 11-19995 9.2 Mechanical tests See EN 2076-3. 10 Marking Products shall be marked in accordance with EN
49、 2076-2 for ingots and EN 2076-3 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 EN 2078 stating the following: The manufacturers name and address, Contract and/or order number,