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1、BRITISH STANDARD AEROSPACE SERIES BS L 158:1978 Specification for Close toleranced sheet and strip of aluminium copper magnesium silicon manganese alloy (Solution treated and aged at room temperature) (Cu 4.4, Mg 0.5, Si 0.8, Mn 0.8) UDC 629.7:669.715372178274 41 153.71 157.83:62 187.4 Licensed Copy
2、: London South Bank University, London South Bank University, Sat Dec 09 02:55:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS L 158:1978 This British Standard, having been prepared under the direction of the Aerospace Standards Committee, was published under the authority of the Executive Board on
3、 30 November 1978 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/24 Draft for comment 76/76492 DC ISBN 0 580 10358 7 A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are respon
4、sible 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 inside front cover, pages i and ii, pages 1 and 2 and a back cover. This standard has been updated (see copyri
5、ght 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 issueComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:49 GMT+00:00 2006
6、, Uncontrolled Copy, (c) BSI BS L 158:1978 BSI 01-2000i Contents Page 1Inspection and testing procedure1 2Quality of material1 3Chemical composition1 4Condition1 5Heat treatment1 6Mechanical properties1 7Dimensional tolerances2 8Identification2 Licensed Copy: London South Bank University, London Sou
7、th Bank University, Sat Dec 09 02:55:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS L 158:1978 BSI 01-20001 NOTE 1The chemical composition of this mate
8、rial complies with that registered as International Designation 2014A. NOTE 2This material is suitable for conversion by the purchaser to other specified heat treatment tempers. 1 Inspection and testing procedure This British Standard shall be used in conjunction with sections 1 and 9 of the latest
9、issue of BS L 100. 2 Quality of material The material shall be made from aluminium and alloying constituents, with or without approved scrap at the discretion of the manufacturer. 3 Chemical composition The chemical composition of the material shall be: 4 Condition The material shall be supplied in
10、one of the following conditions, as stated on the order: a) solution treated in accordance with 5.1, straightened and aged at room temperature in accordance with 5.2 (temper designation T4); b) as rolled (temper designation F). NOTEWhen material is solution treated and aged at room temperature by th
11、e purchaser, the temper designation is T42. In the case of material supplied in the T4 condition, the amount of cold work necessary for straightening shall be minimal and shall be limited to that required to produce a flat sheet. 5 Heat treatment 5.1 Solution treatment. The solution treatment shall
12、consist of heating at a temperature of 505 5 C for not more than 30 min and quenching in water at a temperature not exceeding 40 C. 5.2 Ageing at room temperature. The duration of ageing at room temperature shall be not less than 5 days nor more than 10 days. 5.3 Artificial ageing. Artificial ageing
13、 by the purchaser or by the manufacturer to demonstrate convertibility (see 6.3) shall consist of heating at a temperature of 175 5 C for 9 h to 12 h. NOTEIf the rate of heating is slow, the time at temperature to give the required properties is reduced. The above time at temperature differs, theref
14、ore, from that specified in BS L 159, for the initial artificial ageing by the manufacturer, to take account of the faster rise times to temperature associated with the smaller heating units generally used by purchasers compared with the rise times of the large units used by the material manufacture
15、rs. 6 Mechanical properties 6.1 Tensile test. The mechanical properties obtained from test pieces selected and prepared in accordance with the relevant requirements of BS L 100 shall be not less than the following values. NOTEInformation on SI units is given in BS 3763 “The International Systems of
16、units (SI)” and BS 350 “Conversion factors and tables”. 6.2 Hardness test. The value of X shall be as shown in the following table. 6.3 Convertibility 6.3.1 If test samples from the material, delivered in the condition specified in clause 4 a), are artificially aged in accordance with 5.3 (temper de
17、signation T62), the properties shall be capable of meeting the requirements of BS L 159. Element % min.max. Silicon0.500.9 Iron0.50 Copper3.95.0 Manganese0.401.2 Magnesium0.200.8 Chromiuma0.10 Nickela0.10 Zinca0.25 Titaniuma0.15 Titanium plus zirconiuma 0.20 Others: each0.05 Others: total0.15 Alumin
18、iumRemainder a Subject to the discretion of the Quality Assurance Authority, determination of these elements need be made on a small proportion only of the samples analysed. 0.2 % proof stress Tensile strength Elongation on gauge length of 50 mm MPa (= N/mm2) MPa (= N/mm2) % 25540014 Tensile strengt
19、h of test piece Value of X MPa% 400 to less than 4205 420 to less than 4357.5 435 and over10 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS L 158:1978 2 BSI 01-2000 6.3.2 If test samples from the material,
20、delivered in the condition specified in clause 4 a), are re-solution treated in accordance with 5.1 and aged at room temperature in accordance with 5.2 (temper designation T42), the properties shall be capable of meeting the requirements of 6.1 and 6.2. 6.3.3 If test samples from the material, deliv
21、ered in the condition specified in clause 4 a), are re-solution treated in accordance with 5.1 and artificially aged in accordance with 5.3 (temper designation T62), the properties shall be capable of meeting the requirements of BS L 159. 6.3.4 If test samples from the material, delivered as rolled,
22、 are solution treated in accordance with 5.1, aged at room temperature in accordance with 5.2 and subsequently artificially aged in accordance with 5.3 (temper designation T62), the properties shall be capable of meeting the requirements of BS L 159. 7 Dimensional tolerances The close tolerances on
23、thickness in BS L 100 shall apply. 8 Identification 8.1 The material shall be identified or re-identified as follows. a) Material supplied as specified in clause 4 a): BS L 158 T4. b) Material supplied as specified in clause 4 b): BS L 158 F. c) Material converted in accordance with 6.3.1, 6.3.3 or
24、6.3.4: BS L 159 T62. d) Material converted in accordance with 6.3.2: BS L 158 T42. 8.2 The requirements relating to “all over” marking in BS L 100 shall apply. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI bl
25、ank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS L 158:1978 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing Britis
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34、r 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: 020 8996 7070. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI