ASD-STAN PREN 4449-2003 Aerospace Series Aluminium Alloy AL-P7050-T76 Sheet 0 8 mm Less Than or Equal to a Less Than or Equal to 6 mm (Edition P 2)《航空航天系列 0 8mm≤a≤6mm的AL-P7050-T76铝.pdf

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1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 14 March 2003 prEN 4449 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- T76 Sheet 0,8 mm a 6 mm Srie arospatiale Alliage daluminium AL-P7050- T76 Tles 0,8 mm i ai 6 mm Luft- und Raumfahrt Aluminiumlegierung AL-P7050- T76 Bleche 0,8 mm i ai 6 mm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Associ

3、ation 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 conte

4、nt 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 for S

5、tandardization) for formal vote. Metallic Material Domain I I Copyright 2003 O by AECMA-STA1 Page 2 prEN 4449: 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 of A

6、ECMA-STAN defined in AECMA- STANS General Process Manual, this standard has received approval for Publication. Page 3 prEN 4449: 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 described

7、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 application. 2 Normative references This European Standard incorporates by dated or undated refere c

8、e 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 incorporated

9、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 and a

10、luminium 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 AECMA

11、Prestandard at the date of publication of this standard Page 4 prEN 4449: 2003 Heat treatment Dimensions concerned mm Form Sheet Method of production Rolled Limit dimension(s) mm 0,8 a 6 Technical specification EN 4400-2 Use condition. 1,6a3,2 0,8 a 1,6 3,2 a 6 I T76 I 3.1 I Delivery condition Thick

12、ness of cladding on each face Heat treatment % - - - 470 oc e 485 oc I WQ e 40 oc + 115 “C O 125 “C I4 h t 24 h + 157 OC O 175 “C I8 h t 20 h Direction of test piece Temperature e OC Proof stress Rp0,2 MPa Strength R, MPa Elongation A% I U I 3.2 I Delivery condition code L LT L LT L LT Ambient Ambie

13、nt Ambient 2 460 2 460 2 470 2 470 2 480 2 480 2 500 2 515 2 510 2 525 2 530 2 530 27 27 27 27 27 27 I T76 I 7 I Use condition Reductionofarea I Heat treatment I Delivery condition I Z % - - 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 - - - - - - - - - - - - - - - - - - - - -

14、 - Hardness Shear strength R, MPa Bending k- Characteristics - - - Test sample(s) I See EN 4400-2. - Elongation Rupture stress Test piece(s) I See EN 4400-2. a% - oR MPa - Elongation at rupture A % - Notes (see line 98) - - Impact strength I I Temperature I 0 I “C I - I Time Ihl Page 5 prEN 4449: 20

15、03 - ilectrical conductivity See EN 4400-2. 3acture toughness (Kc) 7 ixternal defects ixfoliation corrosion T-L Dimensions (mm) MPa 3atch uniformity 0,8 a 3,2 Marking inspection Iimensional inspection 2 60 Votes - - rypical use See EN 4400-2. See EN 4400-2. - 7 71 22,O MSlm y 24,5 MSlm See EN 4400-2

16、. Electrical conductivity See EN 4400-2. See EN 4400-2. -I Hard ness 145 (Typical value) HB 6 20 per product A 30 per batch - - I 3,2 a 6 I 2 50 See EN 4400-2. See EN 4400-2. 71 Exfoliation corrosion shall not be greater than that of grade EA -I -I 100 See EN 4400-2. Qualification programme to be agreed between manufacturer and purchaser. Page 6 prEN 4449: 2003 - Product qualification

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