1、BRITISH STANDARD AEROSPACE SERIES BS L 114:1971 Specification for Tube of aluminium- magnesium-silicon- manganese alloy (Solution treated and precipitation treated) (Not exceeding 10 mm wall thickness) (Suitable for welding) (Mg 0.8, Si 1, Mn 0.7) UDC 629.7:669.71578272174-462BSL144:1971 This Britis
2、h Standard, having been approved by the AerospaceIndustry StandardsCommittee, was published under the authority of the Executive Board of the Institution on 30September 1971 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/24 Draft for comment 70/
3、19819 ISBN 0 580 06795 5 A British Standard 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
4、 This document comprises a front cover, an 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 publi
5、cation Amd. No. Date CommentsBSL114:1971 BSI 01-2000 i Contents Page 1 Inspection and testing procedure 1 2 Quality of material 1 3 Chemical composition 1 4 Condition 1 5 Heat treatment 1 6 Mechanical properties 1ii blankBSL114:1971 BSI 01-2000 1 NOTE 1Attention is drawn to the warning contained in
6、Clause6.1. NOTE 2Other forms of material of similar composition and in the same heat treatment condition are covered by the following British Standards: BS L 111, Bars and extruded sections. BS L 112, Forging stock and forgings. BS L 113, Sheet and strip. BS L 115, Plate (controlled stretched). 1 In
7、spection and testing procedure This British Standard shall be used in conjunction with Sections1 and11 of BS L100. 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
8、The chemical composition of the material shall be: 4 Condition Unless otherwise agreed in accordance with BSL100, Section11, the material shall be supplied solution treated, drawn and subsequently precipitation treated. 5 Heat treatment 5.1 Except as permitted in5.2, the material shall be heat treat
9、ed as follows: 1) Solution treat by heating uniformly at a temperature between510 C and540 C and quenching in water. 2) Precipitation treat by heating uniformly at a temperature between165 C and195 C for3hours to12hours. 5.2 Subject to the agreement and conditions of the Inspecting Authority the mat
10、erial, instead of being solution treated in accordance with5.1 1), shall be quenched in water immediately after leaving the extrusion die. 6 Mechanical properties 6.1 Tensile test 1) . The mechanical properties obtained from test pieces selected and prepared in accordance with the relevant requireme
11、nts of BSL100 shall be not less than the following values: Element % min. max. Copper 0.10 Magnesium 0.5 1.2 Silicon 0.7 1.3 Iron 0.5 Manganese 0.4 1.0 Nickel a 0.10 Zinc a 0.2 Lead a 0.05 Tin a 0.05 Titanium and/or other grain refining elements a 0.2 Chromium a 0.25 Aluminium The remainder a Subjec
12、t to the discretion of the Inspecting Authority, determination of these elements need be made on a small proportion only of the samples analysed. 1) WARNING. Tube re-heat treated in accordance with Clause 5 without cold drawing after solution treatment may be expected to have appreciably reduced pro
13、perties. Nominal wall thickness 0.2% proof stress Tensile strength Elongation mm N/mm 2 N/mm 2 % Up to and including 6.0 255 310 7 Over 6.0 up to and including 10.0 240 310 9 NOTE1 N/mm 2= 1 MN/m 2= 0.102 kgf/mm 2= 0.1 hbar =0.065tonf/in 2 . Information on SI units is given in BS3763,“The Internatio
14、nal System of units (SI)” and BS350,“Conversion factors and tables”.BS L 114:1971 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 interna
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