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1、BRITISH STANDARD AEROSPACE SERIES BS L 115:1971 Incorporating Amendment No. 1 Specification for Plate of aluminium- magnesium-silicon- manganese alloy (Solution treated, controlled stretched and precipitation treated) (Not exceeding 25 mm thickness) (Suitable for welding) (Mg 0.8, Si 1, Mn 0.7) UDC
2、629.7:669.71578272174-41 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS L 115:1971 This British Standard, having been approved by the Aerospace Industry Standards Committee, was published under the authorit
3、y of the Executive Board of the Institution on 30 September 1971 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/24 Draft for comment 70/19819 ISBN 0 580 06805 6 A British Standard does not purport to include all the necessary provisions of a con
4、tract. 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 inside front cover, pages i and ii, page 1 and a back cover. This
5、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 issueComments 6844November 1991 Indicated by a sideline in the margin Licensed Copy: L
6、ondon South Bank University, London South Bank University, Sat Dec 09 02:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS L 115:1971 BSI 01-2000i Contents Page 1Inspection and testing procedure1 2Quality of material1 3Chemical composition1 4Condition1 5Heat treatment1 6Mechanical properties1 Lice
7、nsed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS L 115:1971 BSI 0
8、1-20001 NOTE 1This British Standard covers plate, including that which has been forged as an intermediate operation, which is finished by hot or cold rolling. It does not cover forged plate which should be ordered to BS L 112. NOTE 2If material to this British Standard is re-solution treated but not
9、 again controlled stretched, it must be regarded as being in the solution treated and precipitation treated, but not controlled stretched, condition, even though the specified mechanical properties are obtained. NOTE 3Other forms of material of similar composition and in the same heat treatment cond
10、ition 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 114, Tube. 1 Inspection and testing procedure This British Standard shall be used in conjunction with Sections 1 and 14 of BS L 100. 2 Qua
11、lity 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 4.1 Except as provided in 4.2, the material shall be supp
12、lied solution treated, controlled stretched, to a permanent extension of not less than 1“ % nor more than 3 %, and precipitation treated. 4.2 If agreed between the manufacturer and the purchaser and stated on the order, the material shall be supplied solution treated and controlled stretched to a pe
13、rmanent extension of not less than 1“ % nor more than 3 %. No other alternative condition of supply is permissible. 5 Heat treatment The material shall be heat treated as follows: 1) Solution treat by heating uniformly at a temperature between 510 C and 540 C and quenching in water. 2) Precipitation
14、 treat by heating uniformly at a temperature between 165 C and 195 C for 3 hours to 12 hours. 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 follow
15、ing values: Element % min.max. Copper0.10 Magnesium0.51.2 Silicon0.71.3 Iron0.5 Manganese0.41.0 Nickela0.10 Zinca0.2 Leada0.05 Tina0.05 Titanium and/or other grain refining elementsa 0.2 Chromiuma0.25 AluminiumThe remainder a Subject to the discretion of the Inspecting Authority, determination of th
16、ese elements need be made on a small proportion only of the samples analysed. Nominal thickness 0.2 % proof stress Tensile strength Elongation on gauge length of 5.65 or 50 mm mmN/mm2N/mm2% Up to and including 25 2402958 NOTE1 N/mm2 = 1 MN/m2 = 0.102 kgf/mm2 = 0.1 hbar = 0.065 tonf/in2. Information
17、on SI units is given in BS 3763, “The International System of units (SI)”, and BS 350, “Conversion factors and tables”. So Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS L 115:1971 BSI 389 Chiswick High Roa
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