1、BRITISH STANDARD AEROSPACE SERIES BS EN 2256:2004 Aluminium alloy AL-P2618A-T852 Hand and die forgings au 150 mm The European Standard EN 2256:2004 has the status of a British Standard ICS 49.025.20 BS EN 2256:2004 This British Standard was published under the authority of the Standards Policy and S
2、trategy Committee on 12 January 2005 BSI 12 January 2005 ISBN 0 580 45274 3 National foreword This British Standard is the official English language version of EN 2256:2004. The UK participation in its preparation was entrusted to Technical Committee ACE/61/-/24, Light alloys, which has the responsi
3、bility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “Inter
4、national 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 provisions of a contract. Users are responsible for its correct application. Compliance with a Br
5、itish Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international
6、and European developments and promulgate them in the UK. 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. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued
7、 since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2256 December 2004 ICS 49.025.20 English version Aerospace series - Aluminium alloy AL-P2618A - T852 - Hand and die forgings - a 150 mm Srie arospatiale - Alliage daluminium AL-P2618A - T852 - Pices forges
8、 et matrices - a 150 mm Luft- und Raumfahrt - Aluminiumlegierung AL-P2618A - T852 - Freiform- und Gesenkschmiedestcke - a 150 mm This European Standard was approved by CEN on 15 July 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for gi
9、ving this European Standard the status of 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 ver
10、sions (English, French, German). A version 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,
11、 Cyprus, Czech Republic, Denmark, Estonia, 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
12、EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2256:2004: EEN 2256:2004 (E) 2 Contents Page Foreword3 Introduction
13、 .4 1 Scope 4 2 Normative references 4 EN 2256:2004 (E) 3 Foreword This document (EN 2256:2004) 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 Standa
14、rd has received the approval of the National 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
15、 by June 2004, and conflicting national standards shall be withdrawn at the latest by June 2004. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
16、 Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 2256:2004 (E) 4 Introduction This standard is part of the seri
17、es of EN metallic 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-P2618A T852 Hand and die fo
18、rgings a 150 mm for aerospace applications. 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 ame
19、ndments) applies. EN 2486, Aerospace series Aluminium alloy AL-P2618A Forging stock 1)EN 4258, Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use EN 4400-7, Aerospace series Aluminium and aluminium- and magnesium- alloys Tech
20、nical specification Part 7: Aluminium alloy forgings 2)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
21、of this standard 2) In preparation at the date of publication of this standard EN 2256:2004 (E) 5 1 Material designation Aluminium alloy AL-P2618A Others Element Si Fe Cu Mn Mg Ni Zn Ti + Zr Ti Each Total Al min. 0,15 0,9 1,8 1,2 0,8 2 Chemical composition % max. 0,25 1,4 2,7 0,25 1,8 1,4 0,15 0,25
22、0,20 0,05 0,15 Base 3 Method of melting 4.1 Form Hand and die forgings 4.2 Method of production Forged from forging stock to EN 2486 4.3 Limit dimension(s) mm a 150 5 Technical specification EN 4400-7 Delivery condition T352 T852 6.1 Heat treatment 525 C 535 C a / WQ Boiling water + 1 % cold compres
23、sed 5 % + = ambient / t 5 d 525 C 535 C a / WQ Boiling water + 1 % cold compressed 5 % + 185 C 195 C / 16 h t 24 h 6.2 Delivery condition code K U Use condition T852 T852 7 Heat treatment Delivery condition + 185 C 195 C / 16 h t 24 h Delivery condition Characteristics 8.1 Test sample(s) See EN 4400
24、-7. 8.2 Test piece(s) See EN 4400-7. 8.3 Heat treatment Use condition 9 Dimensions concerned mm a 90 90 a 120 120 a 150 10 Thickness of cladding on each face % 11 Direction of test piece L LT ST L LT ST L LT ST 12 Temperature C Ambient Ambient Ambient 13 Proof stress R p0,2 MPa 385 375 375 380 370 3
25、65 370 360 355 14 Strength R m MPa 440 435 425 430 425 415 420 415 405 15 Elongation A % 6 4,5 3 6 4,5 3 6 4,5 3 16 T Reduction of area Z % 17 Hardness 18 Shear strength R c MPa 19 Bending k 20 Impact strength 21 Temperature C 22 Time h 23 Stress a MPa 24 Elongation a % 25 Rupture stress R MPa 26 C
26、Elongation at rupture A % 27 Notes (see line 98) a EN 2256:2004 (E) 6 44 External defects See EN 4400-7. 51 Macrostructure See EN 4400-7. 61 Internal defects See EN 4400-7. 82 Batch uniformity See EN 4400-7. 5 T352 T852 7 Electrical conductivity MS/m 17,5 (typical value) 21,0 (typical value) or 115
27、(typical value) 135 (typical value) 16 per product 20 per product 7 Hardness HB 24 per batch 30 per batch 95 Marking inspection See EN 4400-7. 96 Dimensional inspection See EN 4400-7. 98 Notes aA longer solution heat treatment time than is usual may be required for this alloy, typically 4 h t 24 h.
28、99 Typical use EN 2256:2004 (E) 7 100 Product qualification See EN 4400-7. Qualification programme to be agreed between manufacturer and purchaser. BS EN 2256:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparin
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