1、BRITISH STANDARD AEROSPACE SERIES BS EN 3344:2005 Aluminium alloy AL-P7050 T76511 Extruded bar and section a or D k 150 mm with peripheral coarse grain control The European Standard EN 3342:2005 has the status of a British Standard ICS 49.025.20 BS EN 3344:2005 This British Standard was published un
2、der the authority of the Standards Policy and Strategy Committee on 18 November 2005 BSI 18 November 2005 ISBN 0 580 46848 8 National foreword This British Standard is the official English language version of EN 3344:2005. The UK participation in its preparation was entrusted by Technical Committee
3、ACE/61, Metallic materials for aerospace purposes, to Subcommittee ACE/61/-/24, Light alloys, which has the responsibility to: 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 i
4、nterests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publication
5、s referred to in this document may be found in the BSI Catalogue under 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
6、 provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover.
7、 The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3344 October 2005 ICS 49.025.20 English Version Aerospace series - Aluminium alloy AL-P705
8、0 - T76511 - Extruded bar and section - a or D 150 mm with peripheral coarse grain control Srie arospatiale - Alliage daluminium AL-P7050 - T76511 - Barres et profils fils - a ou D 150 mm avec contrle de la zone priphrique gros grains Luft- und Raumfahrt - Aluminiumlegierung AL-P7050 - T76511 - Stra
9、nggeprete Stangen und Profile - a oder D 150 mm mit Kontrolle der Grobkornrandzone This European Standard was approved by CEN on 19 September 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
10、 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 European Standard exists in three official versions (English, French, German). A versio
11、n 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 national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia
12、, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMI
13、TEE 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 3344:2005: EEN 3344:2005 2 Contents Page Foreword 3 Introduction4 1 Scope .4 2 Normative references .4 EN 33
14、44:2005 3 Foreword This European Standard (EN 3344:2005) 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 Nat
15、ional Associations 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 April 2006, and conflicting nationa
16、l standards shall be withdrawn at the latest by April 2006. 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/CENEL
17、EC Internal 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
18、, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 4 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 EN 4258. This stand
19、ard has been prepared in accordance with EN 4500-2. 1 Scope This standard specifies the requirements relating to: Aluminium alloy AL-P7050- T76511 Extruded bar and section a or D 150 mm with peripheral coarse grain control for aerospace applications. This standard may also be used to supply material
20、 in the T76510 condition if specified by the purchaser on the order and the product is marked accordingly. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, t
21、he latest edition of the referenced document (including any amendments) applies. EN 4258, Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use. EN 4400-3, Aerospace series Aluminium and aluminium alloy wrought products Technica
22、l specification Part 3: Bar and section.1)EN 4500-2, Aerospace series Metallic materials Rules for drafting and presentation of material standards Part 2: Specific rules for aluminium, aluminium alloys and magnesium alloys. 1)1) Published as AECMA Prestandard at the date of publication of this stand
23、ard. EN 3344:20055 1 Material designation Aluminium alloy AL-P7050- Others Element Si 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 Bar and section 4.2 Method of producti
24、on Extruded 4.3 Limit dimension(s) mm a or D 150 5 Technical specification EN 4400-3 Delivery condition T76511 6.1 Heat treatment 470 C 485 C / WQ 40 C + 1 % controlled stretched 3 % + 110 C 125 C / 3 h t 24 h + 157 C 177 C / 6 h t 18 h 6.2 Delivery condition code U Use condition T76511 7 Heat treat
25、ment Delivery condition Characteristics 8.1 Test sample(s) See EN 4400-3. 8.2 Test piece(s) See EN 4400-3. 8.3 Heat treatment Use condition 9 Dimensions concerned mm a or D 10 10 a or D 150 10 Thickness of cladding on each face % 11 Direction of test piece L L 12 Temperature C Ambient Ambient 13 Pro
26、of stress R p0,2 MPa 470 475 14 Strength R mMPa 530 545 15 Elongation A % A 7 or A 50mm 6 7 16 T Reduction of area Z % 17 Hardness 18 Shear strength R cMPa 19 Bending k 20 Impact strength 21 Temperature C 22 Time h 23 Stress a MPa 24 Elongation a % 25 Rupture stress RMPa 26 C Elongation at rupture A
27、 % 27 Notes (see line 98) EN 3344:20056 32 Electrical conductivity See EN 4400-3. 7 22,5 MS/m Acceptable 21,5 MS/m 22,5 MS/m Acceptable if R p0,2L R p0,2min. + 60 MPa ( see line 13) or if stress corrosion test results are acceptable (see line 39). 21,5 MS/m Not acceptable 39 Stress corrosion See EN
28、4400-3. 6 = 170 MPa 7 t 20 d 40 Fracture toughness See EN 4400-3. 7 Dimensions (mm) L-T MPa m T-L MPa m 25 a or D 50 27 22 50 a or D 100 26 21 100 a or D 150 25 20 44 External defects See EN 4400-3. 49 Exfoliation corrosion See EN 4400-3. 7 Exfoliation corrosion shall not be greater than that of gra
29、de EB. 61 Internal defects See EN 4400-3. 82 Batch uniformity See EN 4400-3. 7 Electrical conductivity See EN 4400-3. or 7 150 (Typical value) Hardness HB 20 per product 30 per batch 87 Extrusion back-end defect See EN 4400-3. 88 Peripheral coarse grain See EN 4400-3. 7 Level A 95 Marking inspection
30、 See EN 4400-3. 96 Dimensional inspection See EN 4400-3. 98 Notes 99 Typical use EN 3344:20057 100 Product qualification See EN 4400-3. Qualification programme to be agreed between manufacturer and purchaser. EN 3344:2005BS EN 3344:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards
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