1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Sheet and strip 0,3 mm k a k 6 mmThe European Standard EN 3998:2007 has the status of a British Sta
2、ndardICS 77.150.10Aerospace series Aluminium alloy AL-P2024-T4 or T42 BRITISH STANDARDBS EN 3998:2007BS EN 3998:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2007 BSI 2007ISBN 978 0 580 50593 5Amendments issued since publicatio
3、nAmd. No. Date CommentsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by B
4、SI. It is the UK implementation of EN 3998:2007.The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materials for aerospace purposes, to Panel ACE/61/-/24, Light alloys.A list of organizations represented on this committee can be obtained on request to its s
5、ecretary.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3998 March 2007 ICS 77.150.10 English Version Aerospace series - Aluminium alloy AL-P2024-T4 or T42 - Sheet and strip 0,3 mm a 6 mm Srie arospatiale - Alliage daluminium AL-P2024-T4 ou T42 - Tles et bandes 0,3 mm a 6 mm Luft- und Raumfahr
6、t - Aluminiumlegierung AL-P2024-T4 oder T42 - Bleche und Bnder 0,3 mm a 6 mm This European Standard was approved by CEN on 12 June 2006. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national
7、 standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any
8、other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Esto
9、nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EURO
10、PISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3998:2007: E2 Contents Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 EN 3998:2007
11、3 Foreword This document (EN 3998:2007) has been prepared by the AeroSpace and Defense Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associ
12、ations and the Official Services of the member countries of ASD, 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 September 2007, and conflicting national standard
13、s shall be withdrawn at the latest by September 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, Franc
14、e, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 3998:20074 Introduction This standard is part of the series of EN metallic material st
15、andards 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 a 6 mm for aerosp
16、ace application. 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, the latest edition of the referenced document (including any amendments) applies. EN 4258,
17、Aerospace series Metallic materials General organization 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 Ru
18、les for drafting and presentation of material standards Part 2: Specific rules for aluminium, aluminium alloys and magnesium alloys 1)1) Published as ASD Prestandard at the date of publication of this standard. EN 3998:20075 1 Material designation Aluminium alloy AL-P2024- Others Element Si Fe Cu Mn
19、 Mg Cr Zn Ti Each Total Al min. 3,8 0,30 1,2 2 Chemical composition % max. 0,50 0,50 4,9 0,9 1,8 0,10 0,25 0,15 0,05 0,15 Base 3 Method of melting 4.1 Form Sheet and strip 4.2 Method of production Rolled 4.3 Limit dimension(s) mm 0,3 a 6 5 Technical specification EN 4400-2 Delivery condition F O T4
20、6.1 Heat treatment 490 C 500 C / WQ 40 C + = ambient / t 5 d 6.2 Delivery condition code F A U Use condition T42 T4 7 Heat treatment Delivery condition + 490 C 500 C / WQ 40C + = ambient / t 5 d Delivery condition Characteristics 8.1 Test sample(s) See EN 4400-2. 8.2 Test piece(s) See EN 4400-2. 8.3
21、 Heat treatment Delivery condition: O Use condition: T4 or T42 9 Dimensions concerned mm 0,3 a 1,6 1,6 a 3,2 3,2 a 6 0,4 a 6 10 Thickness of cladding on each face % 11 Direction of test piece LT LT LT LT 12 Temperature C Ambient Ambient Ambient Ambient 13 Proof stress Rp0,2MPa 110 110 110 265 14 Str
22、ength RmMPa 220 220 220 430 15 Elongation A % A50 mm 12 A50 mm 12 A50 mm 12 A50 mm 15 16 T Reduction of area Z % 17 Hardness 18 Shear strength RcMPa 19 Bending k 0,5; = 180 2; = 180 3; = 180 20 Impact strength 21 Temperature C 22 Time h 23 Stress aMPa 24 Elongation a % 25 Rupture stress RMPa26 C Elo
23、ngation at rupture A % 27 Notes (see line 98) EN 3998:20076 See EN 4400-2. 5 T4 7Dimensions (mm) 0,3 a 1,6 1,6 a 3,2 3,2 a 6 38 Intergranular corrosion Depth of penetration (m) 125 150 200 44 External defects See EN 4400-2. See EN 4400-2 5 T4 7Electrical conductivity MS/m 17,5 (Typical value) or 120
24、 (Typical value) 82 Batch uniformity 7Hardness HB 16 per product 24 per batch 95 Marking inspection See EN 4400-2. 96 Dimensional inspection See EN 4400-2. 98 Notes 99 Typical use EN 3998:20077 See EN 4400-2. 100 Product qualification Qualification programme to be agreed between manufacturer and pur
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