1、BRITISH STANDARD BS EN2070-1: 1991 Incorporating Amendment No.1 Specification for Aluminium and aluminium alloy wrought products Technical specification Part 1: General requirements This European Standard EN2070-1:1989 has the status of a British StandardBSEN2070-1:1991 This British Standard was pub
2、lished, under the authority ofthe Standards Board and comes into effect on 31 July1991 BSI11-1999 The following BSI references relate to the work on this standard: Committee reference ACE/61 Draft for comment88/73521 DC ISBN 0 580 19149 4 Cooperating organizations The European Committee for Standard
3、ization, 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 Standardiseringsraad Finland Suomen Stand
4、ardisoimisliito, 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 Luxe
5、mburg 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 Association suisse de
6、 normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date Comments 7705 October1993 Indicated by a sideline in the marginBSEN2070-1:1991 BSI 11-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 T
7、ext of EN2070-1 3 National appendix A Inside back cover National appendix B Inside back coverBSEN2070-1:1991 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 of EN2070 “Aerospa
8、ce series. Aluminium and aluminium alloy wrought products. Technical specification” Part1 “General requirements”, including amendmentA1 published by the European Committee for Standardization (CEN). EN2070-1 was produced as a result of international discussion in which the UK took an active part. A
9、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
10、front cover, an inside front cover, pagesi andii, theENtitle page, pages2 to6, 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 STANDAR
11、D NORME EUROPENNE EUROPISCHE NORM EN2070-1 December1989 +A1 July1993 UDC 669.71.018.26-4:620.1:629.7 Key words: Aircraft industry, rolled products, semi-finished products, aluminium, aluminium alloys, manufacturing, specifications, acceptance English version Aerospace series Aluminium and aluminium
12、alloy wrought products Technical specification Part1: General requirements (include amendmentA1:1993) Srie arospatiale Demi-produits corroys en aluminium et alliages daluminium Spcification technique Partie1: Exigences gnrales (inclut lamendement A1:1993) Luft- und Raumfahrt Halbzeug aus Aluminium u
13、nd Aluminium-Knetlegierungen Technische Lieferbedingungen Teil1: Allgemeine Anforderungen (enthlt nderungenA1:1993) This European Standard was accepted by CEN on1988-07-20. CEN members are bound to comply with the requirements of the CEN Internal Regulations which stipulate the conditions for giving
14、 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. This European Standard exists in three official ver
15、sions (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 are the national standards organizations of Austria, B
16、elgium, 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 Europisches Komitee fr Normung Central Secretariat: rue de Sta
17、ssart 36, B-1050 Brussels CEN1990 Copyright reserved to all CEN members Ref.No.EN2070-1:1989+A1:1993EEN2070-1:1989 BSI 11-1999 2 Brief history This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance
18、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/CENELEC Rules, the following countries are bound to implemen
19、t this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. Foreword to AmendmentA1 This Amendment has been prepared by the European Association of Aerospace Ma
20、nufacturers (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 countries of AECMA, prior to its presentation to CEN. This Amendment
21、 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 national standards shall be withdrawn at the latest by January199
22、4. 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, Portugal, Spain, Sweden, Switzerland, UnitedKingdom. Contents Pa
23、ge 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 External defects 4 10 Testing 5 11 Marking 5 12 Acceptance 6 13 Inspection and test report 6 14 Packing 6 15 Wording of orders 6EN207
24、0-1:1989 BSI 11-1999 3 1 Scope This standard defines the general requirements for inspection and testing of wrought aluminium and aluminium alloys. Particular requirements applicable to each type of wrought products are defined in EN2070-2 to EN2070-7. The corresponding requirements for forgings are
25、 given in EN2082-1 to EN2082-3. 2 Field of application For aerospace purposes this standard shall be applied in conjunction with EN material standards unless otherwise specified on the drawing, order or inspection schedule. By agreement between the purchaser and the manufacturer, it may also be appl
26、ied to other material, semi-finished products or delivery conditions not covered by EN standards. The agreement shall be formalized by reference to this standard on the drawing, order or inspection schedule. 3 References EN2000, Aerospace series Quality assurance EN aerospace products Approval of th
27、e quality system of manufacturers. EN2070-2, Aerospace series Aluminium and aluminium alloy wrought products Technical specification Part2: Sheet, strip, formed profiles and plate. EN2070-3, Aerospace series Aluminium and aluminium alloy wrought products Technical specification Part3: Bar and sectio
28、n. EN2070-4, Aerospace series Aluminium and aluminium alloy wrought products Technical specification Part4: Structural tube. EN2070-5, Aerospace series Aluminium and aluminium alloy wrought products Technical specification Part5: Tube used under pressure. EN2070-6, Aerospace series Aluminium and alu
29、minium alloy wrought products Technical specification Part6: Rivet wire. EN2070-7, Aerospace series Aluminium and aluminium alloy wrought products Technical specification Part7: Wrought forging stock. EN2078, Aerospace series Manufacturing schedule, inspection schedule and inspection report. General
30、 definitions. EN2082-1, Aerospace series Aluminium alloy forging stock and forgings Technical specification Part1: General requirements. EN2082-2, Aerospace series Aluminium alloy forging stock and forgings Technical specification Part2: Forging stock. EN2082-3, Aerospace series Aluminium alloy forg
31、ing stock and forgings Technical specification Part3: Pre-production and production forgings. 4 Definitions 4.1 Cast 4.1.1 metal taken from the same melt in a furnace or crucible or from several melts mixed in the same furnace or crucible before pouring 4.1.2 where a continuous melting process is us
32、ed, a cast may be defined as metal taken from the furnace before the next following charge 4.2 batch a batch consists of material: of the same form (sheer, place, tube, bar,etc.)and of the same nominal dimensions, from the same cast; for extrusions and rivet wire,2 casts which are within60% of the s
33、pecified composition range and in which the maximum impurity content remains unchanged, may be aggregated to form a batch, manufactured in the same production period, in the same heat treatment condition, and from the same heat treatment charge, for solution heat treatment in a continuous furnace, m
34、aterial from a maximum run of8h is regarded as a batch. 4.3 sheet flat rolled product of rectangular section of uniform thickness between0,2mm and6mm, supplied in straight lengths with slit, sawn or sheared edges 4.4 strip a flat rolled product of rectangular section of uniform thickness between0,2m
35、m to6mm, supplied in coils with slit edges 4.5 plate a rolled product of rectangular section and uniform thickness over6mm supplied in a flat form with sheared or sawn edgesEN2070-1:1989 4 BSI 11-1999 4.6 machined plate semi-finished product produced from a plate completely machined over one side or
36、 two sides 4.7 parent plate place undergoing the same operations over its whole length (including controlled stretching) before being cut 4.8 bar wrought material of uniformly round, half round, rectangular, hexagonal, octagonal, or regular polygonal solid section, supplied in straight lengths 4.9 t
37、ube a hollow product, rolled, extruded and/or drawn of uniform wall thickness generally supplied in straight lengths 4.10 wire a rolled and extruded and/or drawn product of solid section generally supplied in coil 4.11 section a product extruded, rolled or formed of uniform, solid or hollow cross se
38、ction other than bar, wire, tube, sheet, strip or plate, generally supplied in straight lengths 4.12 controlled stretching stretching performed after solution heat treatment and quenching for the purpose of reducing internal stresses the stretching is defined by a minimum permanent elongation and if
39、 necessary by a maximum permanent elongation indicated in the material standard 4.13 “capability clause” some test requirements may be met on a capability basis. Capability infers that the characteristics under consideration will conform to the requirements of the relevant standard but that verifica
40、tion may be at a reduced frequency. In such cases the manufacturer shall guarantee that the material will meet these requirements. The guarantee shall be based on statistical evidence if subsequent inspection and testing demonstrate that a product does not meet the requirement the batch shall be rej
41、ected 5 Quality assurance See EN2000. 6 Manufacture 6.1 Unless otherwise specified, the method of manufacture to be employed shall be at the discretion of the manufacturer. 6.2 Before any modification to the manufacturing process which may affect the quality of the semi-finished product, the manufac
42、turer shall inform the purchaser. 6.3 The product shall be supplied in the heat treatment condition 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 in the order or on t
43、he drawing. If a specific temperature (value and tolerance) is stated, that temperature shall be mandatory. If a temperature range is stated, a temperature within that range reduced by the tolerances shall be selected to give the required properties. Unless otherwise specified the charge shall be ma
44、intained at the temperature subject to the tolerance of 5 C, for the period stated. 7 Traceability Each product shall, at all stages, be identifiable as to its cast and/or production batch and/or heat treatment batch. If agreed between the purchaser and the manufacturer, the relevant ingot number an
45、d the position of the product in that ingot shall be recorded. For extrusions and rivet wires, traceability to the individual cast is not required unless otherwise specified by the order, manufacturing or inspection schedule. 8 Freedom from defects The products shall be free from harmful defects and
46、 not withstanding previous acceptance of products complying with this standard; any product that is found, at a later stage, to contain such defects may be rejected. 9 External defects The products shall have a surface condition adequate for effective visual examination. Acceptance conditions are pr
47、ovided in the individual standards covering each type of product (EN2070-2 to EN2070-7).EN2070-1:1989 BSI 11-1999 5 10 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 test
48、 standard does not exist the method to be used shall be agreed between manufacturer and purchaser. The test results shall conform with the specified requirements. The frequency of sampling as well as the location of test samples are given in the relevant standards covering each product (EN2070-2 to
49、EN2070-7) or order or in the inspection schedule. The “Capability clause” applies to certain tests as indicated in the relevant inspection and test standards covering each product (EN2070-1 to EN2070-7). 10.1 Chemical analysis 10.1.1 The chemical composition of the delivered product shall comply with the requirements of the relevant material standard. 10.1.2 The chemical composition of each cast shall be determined. The samples taken for analysis shall be representative of the ca
