1、BRITISH STANDARD AEROSPACE SERIES BS L102:1971 (Superseding BS2L64) Specification for Bars and extrudedsections of aluminium-copper- magnesium-silicon- manganese alloy (Solution treated and aged at room temperature) (Not exceeding 200 mm diameter or minor sectional dimension) (Cu 4.4, Mg 0.5, Si 0.7
2、, Mn 0.8) UDC 629.7:669.71537217827442BSL 102:1971 This British Standard, having been approved by the Aerospace Industry Standards Committee, was published under the authorityof the Executive Boardof the Institution on 31August 1971 BSI 02-2000 The following BSI references relate to the work on this
3、 standard: Committee reference ACE/24 Draft for comment 69/23023 ISBN 0 580 06456 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 itse
4、lf confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 3 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendme
5、nt table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSL 102:1971 BSI 02-2000 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 2 Appendix A British S
6、tandards covering other forms of material of similar composition 3ii blankBSL 102:1971 BSI 02-2000 1 NOTEOther forms of material of similar composition are covered by British Standards as listed in Appendix A. 1 Inspection and testing procedure 1.1 This British Standard shall be used in conjunction
7、with the relevant sections of BS L 100 as follows: 1.2 If material bought to this British Standard is required, after precipitation treatment by the purchaser, to comply with the requirements for mechanical properties specified in BS L 65, the order shall stipulate additional tests to verify that, a
8、fter such treatment, the material will comply with those requirements. 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 sha
9、ll be: 4 Condition 4.1 Bars and extruded sections. Unless otherwise agreed and stated on the order in accordance with BSL100, Section 5, the material shall be supplied solution treated, straightened and aged at room temperature, but not controlled stretched. 4.2 Bars and extruded sections for highly
10、 stressed structures. Unless otherwise agreed and stated on the order in accordance with BS L 100, Section 6, the material shall be supplied solution treated, controlled stretched and aged at room temperature. 5 Heat treatment The material shall be heat treated as follows: 1) Solution treat by heati
11、ng at a temperature of 505 5 C and quenching in water at a temperature not exceeding 40 C. 2) Age at room temperature for not less than 48 hours. Bars and extruded sections Sections 1 and 5 Bars and extruded sections for highly stressed structures Sections 1 and 6 Element % min. max. Copper 3.9 5.0
12、Magnesium 0.20 0.8 Silicon 0.50 0.90 Iron 0.5 Manganese 0.40 1.2 Nickel a 0.2 Zinc a 0.2 Lead a 0.05 Tin a 0.05 Titanium plus Zirconium a 0.2 Chromium a 0.10 Aluminium The remainder a Subject to the discretion of the Inspecting Authority, determination of these elements need be made on a small propo
13、rtion only of the samples analysed.BSL 102:1971 2 BSI 02-2000 6 Mechanical properties 6.1 Tensile test. Unless they are required by BS L 100 to be fixed by agreement between the manufacturer and the purchaser, the mechanical properties obtained from test pieces selected and prepared in accordance wi
14、th the relevant requirements of BS L 100 shall be not less than the following values: NOTE1 N/mm 2= 1 MN/m 2= 0.102 kgf/mm 2= 0.1 hbar = 0.065 tonf/in 2 . Information on SI units is given in BS 3763, “The International System of units (SI)” and in PD 5686, “The use of SI units”. See also BS350, “Con
15、version factors and tables”. 6.2 Hardness test. The value of X shall be as shown in the following table: Diameter or minor sectional dimension of the bar or extruded section 02% proof stress Tensile strength Elongation on gauge length of 50 mm 5.65 mm N/mm 2 N/mm 2 % % Over Up to and including 10 23
16、5 370 11 10 20 260 400 11 11 20 75 270 410 14 75 150 260 400 12 150 200 230 370 8 Tensile strength of test piece aValue of X N/mm 2 % f t to less than f t+ 15 5 f t+ 15 to less than f t+ 30 7.5 f t+ 30 to less than f t+ 45 10 f t+ 45 and over 12.5 a f t= minimum value for the particular size of mate
17、rial as specified in 6.1. S oBSL 102:1971 BSI 02-2000 3 Appendix A British Standards covering other forms of material of similar composition Form Solution treated and aged at room temperature Solution treated and precipitation treated Supplied for solution treatment by the user Bars and extruded sec
18、tions (not exceeding 200 mm diameter or minor sectional dimension) L.65 Forging stock and forgings L.103 L.77 Hexagonal bars for nuts, couplings and hollow machined parts (free from peripheral and asymmetric coarse grain) L.87 Sheet and strip L.70 L.104 L.106 a Aluminium-coated sheet and strip L.72
19、L.73 L.107 a Close toleranced sheet and strip (aluminium-coated) L.89 L.90 L.108 a Tube (not exceeding 10 mm wall thickness) L.105 L.63 Wire for solid, cold-forged rivets (not exceeding 10mm diameter) L.37 Plate: controlled stretched L.93 Plate: not controlled stretched L.94 a In course of preparati
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