1、BRITISH STANDARD AEROSPACE SERIESBS EN 4449:2005Aluminium alloy AL-P7050 T76 Sheet 0,8 mmkak6 mmThe European Standard EN 4449:2005 has the status of a British StandardICS 49.025.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36
2、g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Fri Apr 14 07:12:44 BST 2006, Uncontrolled Copy, (c) BSIBS EN 4449:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 January 200
3、6 BSI 12 January 2006ISBN 0 580 46327 3National forewordThis British Standard is the official English language version of EN 4449:2005.The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materials for aerospace purposes, to Subcommittee ACE/61/-/24, Light al
4、loys, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue unde
5、r the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appli
6、cation. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monito
7、r related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issu
8、ed.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Fri Apr 14 07:12:44 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4449 August 2005 ICS 49.025.20 English Version Aerospace series - Aluminium alloy AL-P7050 - T76 - She
9、et - 0,8 mm a 6 mm Srie arospatiale - Alliage daluminium AL-P7050 - T76 - Tles - 0,8 mm a 6 mm Luft- und Raumfahrt - Aluminiumlegierung AL-P7050 - T76 -Bleche - 0,8 mm a 6 mm This European Standard was approved by CEN on 22 April 2005. CEN members are bound to comply with the CEN/CENELEC Internal Re
10、gulations 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 member. This
11、 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 are the
12、 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 Kingdom
13、. 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 4449:2005: ELicensed
14、 Copy: Wang Bin, na, Fri Apr 14 07:12:44 BST 2006, Uncontrolled Copy, (c) BSI2 Contents Foreword 3 Introduction4 1 Scope .4 2 Normative references .4 BS EN 4449:2005Licensed Copy: Wang Bin, na, Fri Apr 14 07:12:44 BST 2006, Uncontrolled Copy, (c) BSI3 Foreword This document (EN 4449:2005) has been p
15、repared 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 and the Official Services of the member countrie
16、s 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 February 2006, and conflicting national standards shall be withdrawn at the latest by February 2006. A
17、ttention 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 Regulations, the national standards organizations
18、 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, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia,
19、Spain, Sweden, Switzerland and the United Kingdom. BS EN 4449:2005Licensed Copy: Wang Bin, na, Fri Apr 14 07:12:44 BST 2006, Uncontrolled Copy, (c) BSI4 Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this ser
20、ies is described in 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-P7050- T76 Sheet 0,8 mm a 6 mm for aerospace applications. 2 Normative references The following referenced documents are indispe
21、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
22、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
23、luminium, aluminium alloys and magnesium alloys. 1) 1) Published as AECMA Prestandard at the date of publication of this standard. BS EN 4449:2005Licensed Copy: Wang Bin, na, Fri Apr 14 07:12:44 BST 2006, Uncontrolled Copy, (c) BSI5 1 Material designation Aluminium alloy AL-P7050- Others Element Si
24、Fe Cu Mn Mg Cr Zn Zr Ti Each Total Al min. 2,0 1,9 5,7 0,08 2 Chemical composition % max. 0,12 0,15 2,6 0,10 2,6 0,04 6,7 0,15 0,06 0,05 0,15 Base 3 Method of melting 4.1 Form Sheet 4.2 Method of production Rolled 4.3 Limit dimension(s) mm 0,8 a 6 5 Technical specification EN 4400-2 Delivery conditi
25、on T76 6.1 Heat treatment 470 C 485 C / WQ 40 C + 115 C 125 C / 4 h t 24 h + 157 C 175 C / 8 h t 20 h 6.2 Delivery condition code U Use condition T76 7 Heat treatment 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 Use conditio
26、n. 9 Dimensions concerned mm 0,8 a 1,6 1,6 a 3,2 3,2 a 6 10 Thickness of cladding on each face % 11 Direction of test piece L LT L LT L LT 12 Temperature C Ambient Ambient Ambient 13 Proof stress Rp0,2MPa 460 460 470 470 480 480 14 Strength RmMPa 500 515 510 525 530 530 15 Elongation A50mm% 7 7 7 7
27、7 7 16 T Reduction of area Z % 17 Hardness 18 Shear strength RcMPa 19 Bending k 20 Impact strength 21 Temperature C 22 Time h 23 Stress aMPa 24 Elongation a % 25 Rupture stress RMPa 26 C Elongation at rupture A % 27 Notes (see line 98) BS EN 4449:2005Licensed Copy: Wang Bin, na, Fri Apr 14 07:12:44
28、BST 2006, Uncontrolled Copy, (c) BSI6 32 Electrical conductivity See EN 4400-2. 722,0 MS/m 24,5 MS/m 40 Fracture toughness (Kco) See EN 4400-2. 7 Dimensions (mm) T-L MPa m 0,8 a 3,2 60 3,2 a 6 50 44 External defects See EN 4400-2. 49 Exfoliation corrosion See EN 4400-2. 7 Exfoliation corrosion shall
29、 not be greater than that of grade EA 82 Batch uniformity See EN 4400-2. 7 Electrical conductivity See EN 4400-2. or 145 (Typical value) Hardness HB 20 per product 30 per batch 95 Marking inspection See EN 4400-2. 96 Dimensional inspection See EN 4400-2. 98 Notes 99 Typical use BS EN 4449:2005Licens
30、ed Copy: Wang Bin, na, Fri Apr 14 07:12:44 BST 2006, Uncontrolled Copy, (c) BSI7 100 Product qualification See EN 4400-2. Qualification programme to be agreed between manufacturer and purchaser. BS EN 4449:2005Licensed Copy: Wang Bin, na, Fri Apr 14 07:12:44 BST 2006, Uncontrolled Copy, (c) BSIBS EN
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