1、BRITISH STANDARD AEROSPACE SERIES BS L 155:1977 Incorporating Amendment Nos. 1 and 2 Specification for Ingots and castings of aluminium-copper- silicon alloy (Solution treated and artificially aged) (Cu 4, Si 1) UDC 629.7:669.715378214153.71157.84BSL 155:1977 This British Standard, having been prepa
2、red under the directionof the Aerospace Standards Committee, was published under the authority ofthe Executive Board on 31January1977 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/27 Draft for comment76/70247 DC ISBN0580099806 A British Standar
3、d does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an
4、 inside front cover, pages i and ii, page 1 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date of issue Comments 373
5、6 September 1981 6545 March 1991 Indicated by a sideline in the marginBSL 155:1977 BSI 01-2000 i Contents Page 1 Inspection and testing procedure 1 2 Chemical composition 1 3 Heat treatment 1 4 Mechanical properties 1 5 Grain size 1ii blankBSL 155:1977 BSI 01-2000 1 NOTEIngots and castings of this c
6、omposition but solution treated and aged at room temperature are covered by BSL154. 1 Inspection and testing procedure This British Standard shall be used in conjunction with the relevant sections of the latest issue of BSL101 as follows. 2 Chemical composition 2.1 The chemical composition of the in
7、gots and castings shall be: 2.2 The ingots and castings shall be grain refined with titanium or with titanium and boron. The ingot maker shall declare the grain refining element(s) used. 3 Heat treatment 3.1 The castings and test samples shall be heat treated together as follows: a) solution treat a
8、t a temperature of510 5 C for not less than16h; b) quench into water at a temperature of50 C to70 C or in a polymer quenchant at a temperature not greater than30 C; NOTEThe use of polymer quenchant as an alternative to water should be agreed by the purchaser. c) artificially age by heating at a temp
9、erature of140 10 C for not less than16h; d) cool in air. 3.2 Where a polymer quenchant has been used in3.1 b), the nature of the quenchant shall be defined on the certificate of conformity for the castings. 4 Mechanical properties 4.1 Tensile test NOTEThe tensile test values specified for test piece
10、s machined from separately cast test samples may not be realized in certain portions of castings. The mechanical properties obtained from separately cast test samples, selected and prepared in accordance with the relevant requirements of BSL101, shall be not less than the following values. NOTEInfor
11、mation on SI units is given in BS3763 “The International System of units (SI)” and BS350 “Conversion factors and tables”. 4.2 Hardness test. The hardness of castings heat treated with unrelated test samples, in accordance with clause3, shall be not less than the following values: 5 Grain size The gr
12、ain size of the castings shall be as uniform as possible and preferably not greater than0.20mm. Ingots sections 1 and 2 Castings not subject to cut-up testing sections 1 and 3 Castings subject to cut-up testing sections 1 and 4 Element % min. max. Silicon 1.0 1.5 Iron 0.25 Copper 3.8 4.5 Manganese 0
13、.1 Magnesium 0.10 Nickel 0.1 Zinc 0.1 Titanium 0.05 0.25 Lead 0.05 Tin 0.05 Others each 0.05 Others total 0.15 Aluminium Remainder Test sample 0.2 % proof stress Tensile strength Elongation MPa (= N/mm 2 ) MPa (= N/mm 2 ) % Sand cast 200 280 4 Chill cast 200 310 9 Sand cast 85 HB Chill cast 85 HBBS
14、L 155:1977 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishSta
15、ndards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while usin
16、g this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive
17、 the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of
18、 those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information ser
19、vices are also available which give details on all its products and services. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details
20、 of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, D
21、esigns and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standar
22、d, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.
