1、BRITISH STANDARDBS EN 2703:2005Aluminium alloy Aerospace series AL-P2024-T4 or T42 Clad sheet and strip 0,3 mm ka k6 mm ICS 49.025.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g5
2、0g51g60g53g44g42g43g55g3g47g36g58Incorporating corrigendumDecember 2010National forewordThis British Standard is the UK implementation of EN 2703:2005. It supersedes BS L 110:1971 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materia
3、ls for aerospace purposes, to Subcommittee ACE/61/-/24, Light alloys.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct app
4、lication.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 2703:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 4 October 2005 BSI 2010Amendments/corrigenda issued since publicationDate Comments 31 Dec
5、ember 2010 Addition of supersession details to national forewordISBN 978 0 580 72941 6EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2703 June 2005 ICS 49.025.20 English version Aerospace series - Aluminium alloy AL-P2024-T4 or T42 - Clad sheet and strip - 0,3 mm a 6 mm Srie arospatiale - Alli
6、age daluminium AL-P2024-T4 ou T42 - Tles et bandes plaques - 0,3 mm a 6 mm Luft- und Raumfahrt - Aluminiumlegierung AL-P2024-T4 oder T42 - Bleche und Bnder, plattiert - 0,3 mm a 6 mmThis European Standard was approved by CEN on 22 April 2005. CEN members are bound to comply with the CEN/CENELEC Inte
7、rnal 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 Central Secretariat or to any CEN membe
8、r. 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 the Central Secretariat has the same status as the official versions. CEN members
9、are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
10、Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2703:2005: E2
11、 Foreword This document (EN 2703:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations
12、 and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2005, and conflicting national standards sha
13、ll be withdrawn at the latest by December 2005. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal
14、Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherland
15、s, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 2703:2005EN 2703:2005 (E)3 Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in
16、EN 4258. This standard has been prepared in accordance with EN 4500-2. 1 Scope This standard specifies the requirements relating to: Aluminium alloy AL-P2024- T4 or T42 Clad sheet and strip 0,3 mm a 6 mm for aerospace application. 2 Normative references The following referenced documents are indispe
17、nsable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 4258, Aerospace series Metallic materials General organization of standardization Links betw
18、een types of EN standards and their use. EN 4400-2, Aerospace series Aluminium and aluminium alloy wrought products Technical specification Part 2: Sheet and strip. 1)EN 4500-2, Aerospace series Metallic materials Rules for drafting and presentation of material standards Part 2: Specific rules for a
19、luminium, aluminium alloys and magnesium alloys. 1) 1) Published as AECMA Prestandard at the date of publication of this standard. BS EN 2703:2005EN 2703:2005 (E)4 1 Material designation Aluminium alloy AL-P2024- Others Element Si Fe Cu Mn Mg Cr Zn Ti Each Total Al min. 3,8 0,30 1,2 2 Chemical compo
20、sition % max. 0,50 0,50 4,9 0,9 1,8 0,10 0,25 0,15 0,05 0,15 Base 3 Method of melting 4.1 Form Clad sheet and strip 4.2 Method of production Rolled 4.3 Limit dimension(s) mm 0,3 a 6 5 Technical specification EN 4400-2 Delivery condition F O T4 6.1 Heat treatment + 490 C 500 C / WQ 40 C + = ambient /
21、 t 5 d 6.2 Delivery condition code F A UUse condition T42 T4 7 Heat treatment Delivery condition + 490 C 500 C / WQ 40 C + = ambient / t 5 d Delivery condition Characteristics 8.1 Test sample(s) See EN 4400-2. 8.2 Test piece(s) See EN 4400-2. 8.3 Heat treatment Delivery condition: O Use condition: T
22、4 or T42 9 Dimensions concerned mm 0,3 a 1,6 1,6 a 3,2 3,2 a 6 0,3 a 0,8 0,8 a 1,6 1,6 a 6 10 Thickness of cladding on each face % 4 2 2 4 4 2 11 Direction of test piece LT LT LT LT LT LT 12 Temperature C Ambient Ambient Ambient Ambient Ambient Ambient 13 Proof stress Rp0,2MPa 110 110 110 235 235 25
23、0 14 Strength RmMPa 210 220 220 390 390 415 15 Elongation A % A50 mm 12 A50 mm 12 A50 mm 12 A50 mm 12 A50 mm 15 A50 mm 15 16 T Reduction of area Z % 17 Hardness 18 Shear strength RcMPa 19 Bending k 0,5: = 180 1,5: = 180 2: = 180 20 Impact strength 21 Temperature C 22 Time h 23 Stress aMPa 24 Elongat
24、ion a % 25 Rupture stress RMPa 26 C Elongation at rupture A % 27 Notes (see line 98) BS EN 2703:2005EN 2703:2005 (E)5 44 External defects See EN 4400-2. 62 Diffusion in the cladding See EN 4400-2. See EN 4400-2. Material designationAluminium AL-P1050A Others Element Si Fe Cu Mn Mg Zn Ti Each Total A
25、l min. 99,50 7 max. 0,25 0,40 0,05 0,05 0,05 0,07 0,05 0,03 or as an alternative, if agreed between purchaser and manufacturer Material designationAluminium AL-P1145- Others Element Si + Fe Cu Mn Mg Zn V Ti Each Total Al min. 99,45 72 Cladding chemical composition % 7 max. 0,55 0,05 0,05 0,05 0,05 0
26、,05 0,03 0,03 See EN 4400-2. 5T4 82 Batch uniformity 7Electrical conductivity See EN 4400-2. 95 Marking inspection See EN 4400-2. 96 Dimensional inspection See EN 4400-2. 98 Notes 99 Typical use BS EN 2703:2005EN 2703:2005 (E)6 100 Product qualification See EN 4400-2. Qualification programme to be a
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