1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 14 March 2003 prEN 4450 Edition P 2 March 2003 Comments should be sent within six months after the date of publication to AECMA-STAN ICs: Descriptors: ENGLISH VERSION Supersedes edition P 1 June 1998 Aerospace series Aluminium al
2、loy AL-P7050- T762 Sheet 0,8 mm a 6 mm Srie arospatiale Alliage daluminium AL-P7050- T762 Tles 0,8 mm i ai 6 mm Luft- und Raumfahrt Aluminiumlegierung AL-P7050- T762 Bleche 0,8 mm i ai 6 mm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Ass
3、ociation of Aerospace Industries - Standardization). It is published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical co
4、ntent shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee fo
5、r Standardization) for formal vote. Metallic Material Domain I I Copyright 2003 O by AECMA-STA1 Page 2 prEN 4450: 2003 Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANS Metallic Material Domain. After inquiries and votes carried out in accordance with the rules o
6、f AECMA-STAN defined in AECMA- STANS General Process Manual, this standard has received approval for Publication. Page 3 prEN 4450: 2003 O Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is describ
7、ed 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- T762 Sheet 0,8 mm a 6 mm for aerospace application. 2 Normative references This European Standard incorporates by dated or undated refe
8、re ce provisia s from other publicatic S. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorpora
9、ted in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 4258, Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use EN 4400-2, Aerospace series - Aluminium a
10、nd 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 aluminium, aluminium alloys and magnesium alloys 1) 1) Published as AE
11、CMA Prestandard at the date of publication of this standard Page 4 prEN 4450: 2003 1 Material designation Aluminium alloy AL-P7050- 3 4.1 4.2 4.3 5 - - - - Form Method of production Limit dimension(s) mm Technical specification Method of melting I Sheet Rolled 0,8 a 6 See EN 4400-2. Delivery conditi
12、on Heat treatment - 3.1 - 3.2 7 - - - 3.1 3.2 3.3 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 - - - - - - - - - - - - - - - - - - - - - - F O T76 470 oc e 485 oc I WQ e 40 oc - - + 115 “C O 125 “C I4 h t 24 h + 157 OC 6% 175 “C I8 h t 20 h Delivery condition code Use condition F A P T762
13、 Heat treatment Delivery condition: O 0,8 a 1,6 Delivery condition +470 “C Os485 “C I WQ O 40 “C + 115 “C 6% 125 “C I4 h t 24 h Use condition: T762 1,6 a 3,2 0,8 a 1,6 3,2 a 6 + 157 CS O 175 “CI8 ht 20 h Characteristics Dimensions concerned Test sample(s) I See EN 4400-2. mm Thickness of cladding on
14、 each face See EN 4400-2. % - - - - Direction of test piece Temperature e OC L LT L LT L LT L LT Ambient Ambient Ambient Ambient Reductionofarea I Proof stress I Rp0,2 I MPa Z % - T I Strength I Rm I MPa Hardness Shear strength R, MPa Bending k- I Elongation I A I % - - - Stress Elongation Rupture s
15、tress C - Impact strength I oa MPa - a% - oR MPa - I Temperature I 0 I “C I - Elongation at rupture I Time Ihl - A % - Notes (see line 98) - Ilectrical conductivity - - ixternal defects See EN 4400-2. See EN 4400-2. Marking inspection Iimensional inspection Votes rypical use Page 5 prEN 4450: 2003 See EN 4400-2. 22,O MSlm I y I 24,5 MSlm See EN 4400-2. -I -I 100 See EN 4400-2. Qualification programme to be agreed between manufacturer and purchaser. Page 6 prEN 4450: 2003 - Product qualification
