1、AECMA STANDARD NORME AECMA AECMA NORM prEN 3998 Edition P 2 July 2002 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION AEmksTAfd Gulledelle 94 - 8-1200 Brussels - Tel. + 32 2 775 81 10 - Fax. + 32 2 775 81 11 - www.aecrna-stan.org ICs: ENGLISH VERSION Aerospace series
2、Al u min i um alloy AL-P2024- T4 or T42 Sheet and strip 0,3 mm 5 a16 mm Supersedes edition P 1 August 1993 Srie arospatiale Alliage daluminium AL-P2024- T4 ou T42 Tles et bandes 03 mm 1 a S 6 mm Luft- und Raumfahrt Aluminiumlegierung AL-P2024- T4 oder T42 Bleche und Bnder 03 mm 1 as6 mm This “Aerosp
3、ace Series” Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association 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 Dom
4、ain following member comments. Subsequent to the publication of this Prestandard, the technical content 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 agree
5、ment of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199. rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX I I Edition approved for publicati
6、on 1 Comments should be sent within six months after the date of Dublication to 31 July 2002 AECMA-STAN Gulledelle 94 8-1200 BRUXELLES Material Domain Copyright 2002 O by AECMA-STA Page 2 prEN 3998: 2002 Blank page Page 3 prEN 3998: 2002 O Introduction This standard is part of the series of EN metal
7、lic material standards for aerospace applications. The general organization of this series 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-P2024- T4 or T42 Sheet and strip 0,3 mm I
8、 a I6 mm for aerospace application. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references,
9、 subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated 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 organiz
10、ation of standardization - Links between 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 mat
11、erial 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 standard Page 4 prEN 3998: 2002 2 I Material designation Chemical Others Element si Fe Cu Mn Mg Cr Zn Ti AI min. - - 3,8 0,30 1,2 -
12、- - - - composition Each Total % Base max. 0,50 0,510 4,9 0,9 1,8 0,lO 0,25 0,15 0,05 0,15 I Aluminium alloy AL-P2024- I 4.3 5 Limit dimension(s) mrn 0,3 I a I 6 Technical specification EN 4400-2 I - I 3 I Method of melting I 6.1 Delivery condition F 14.1 I Form I Sheet and strip I O T4 FlMethodof p
13、roduction 6.2 7 Rolled I Delivery condition code F A U Use condition T42 T4 Heat treatment Delivery condition Delivery condition 9 I 11 Dimensions concerned mm 0,3 I a I 1,6 1,6 a 5 3,2 3,2 a I6 0,4 I a I 6 each face Direction of test piece LT LT LT LT Thickness of cladding on % - - - - 1 490 oc I e
14、s 500 *ciwQ e140 oc + e= ambient It 2 5d Temperature e oc Ambient Ambient Ambient Ambient Proof stress Rm.2 MPa I 110 Ill0 5 110 2 265 Strength R, MPa I 220 I220 5 220 2 430 Elongation A% ASmrn 2 12 a = 180“ 2; a= 180“ 3; a = 180“ - Impact strength - Temperature I e IT - II + 490 OC I e so OC 1 WQ e
15、s 40“c + e= ambient It 2 5 d Stress Elongation Characteristics oe MPa - a% - 8.1 1 Test sample(s) 1 See EN 4400-2. I 25 26 1 See EN 4400-2. 18.2 I Test piece(s) I Rupture stress OR MPa - Elongation at A % - rupture 18.3 I Heat treatment 27 Notes (see line 98) Delivery condition: O - I Use condition:
16、 T4 or T42 16 I - I - I - I - I 17 I Hardness I I22 I ITime Ihl Page 5 prEN 3998: 2002 - 5 itergranular corrosion See EN 4400-2. T4 ixternal defects 7 - latch uniformity 0,3 5 a s 1,6 1,6 a I 3,2 3,2 a I 6 Dimensions (mm) Depth of penetration (pm) I 125 I150 I200 See EN 4400-2. Marking inspection Di
17、mensional inspection 7 - Typical use Electrical conductivity Y MSlm 173 (Typical value) HB 120 (Typical value) 6 I 16 per product A I24 per batch See EN 4400-2. - - - T4 See EN 4400-2. See EN 4400-2. - Hardness Page 6 prEN 3998: 2002 Iroduct qualification See EN 4400-2. ualification programme to be agreed between manufacturer and purchaser.
