1、BRITISH STANDARD AEROSPACE SERIES BS 2L 93:1971 (Superseding BSL93) Incorporating Amendment No. 1 Specification for Plate of aluminium- copper-magnesium- silicon-manganese alloy (Solution treated, controlled stretched and precipitation treated) (Cu4.4, Mg0.5, Si0.7, Mn0.8) UDC 629.7:669.715372178274
2、-41BS2L93:1971 This British Standard, having been approved by the Aerospace Industry Standards Committee, was published underthe authorityofthe Executive Boardof the Institutionon 31August1971 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/24 Dr
3、aft for comment 69/23023 ISBN 0 580 06984 2 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 obligation
4、s. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to3 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. Amendmen
5、ts issued since publication Amd. No. Date of issue Comments 6841 November 1991 Indicated by a sideline in the marginBS2L93:1971 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 2
6、 Appendix A British Standards covering other forms of material of similar composition 3ii blankBS2L93:1971 BSI 01-2000 1 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 pla
7、te which should be ordered to BS L 77. NOTE 2If material to this British Standard is re-solution treated but not 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 p
8、roperties are obtained. Plate of this composition in that condition is covered by BS L 94. NOTE 3The specified chemical composition and mechanical properties meet the requirements of A.I.C.M.A. Recommendation AL.P12. NOTE 4Other forms of material of similar composition are covered by British Standar
9、ds as listed inAppendix A. 1 Inspection and testing procedure This British Standard shall be used in conjunction with Sections1 and14 of BSL 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 manufa
10、cturer. 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 supplied solution treated, controlled stretched, to a permanent extension of not less than 1“ % nor more than 3 %, and precipitation treated. 4.2 If agre
11、ed between the manufacturer and the purchaser and stated on the order, the material shall be supplied solution treated and controlled stretched to a permanent extension of not less than 1“ % nor more than 3 %. No other alternative condition of supply is permissible. 5 Heat treatment The material sha
12、ll be heat treated as follows: 1) Solution treat by heating at a temperature of505 5 C and quenching in water at a temperature not exceeding40 C. 2) Precipitation treat by heating uniformly for the requisite period at a temperature between160 C and190 C. Element % min. max. Copper 3.9 5.0 Magnesium
13、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 proportion only
14、 of the samples analysed.BS2L93:1971 2 BSI 01-2000 NOTEThe following temperatures and times at temperature have been found appropriate: 6 Mechanical properties 6.1 Tensile test. The mechanical properties obtained from test pieces selected and prepared in accordance with the relevant requirements of
15、BS L 100 shall be not less than the following values: Temperature Time at temperature C hours 165 12 to 18 175 9 to 12 185 3 to6 Nominal thickness Direction 0.2 % proof stress Tensile strength Elongation on gaugelengthof 50 mm 5.65 mm N/mm 2 N/mm 2 % % Over Up to and including 6 12.5 Long transverse
16、 410 460 7 12.5 25 Long transverse 410 460 6 25 40 Longitudinal Long transverse Short transverse 410 400 360 450 450 420 6 5 2.5 40 63 Longitudinal Long transverse Short transverse 400 390 360 430 430 420 6 5 2.5 63 90 Longitudinal Long transverse Short transverse 400 390 360 430 430 420 6 4 2.5 90
17、115 Longitudinal Long transverse Short transverse 380 370 340 430 420 410 6 4 2.5 115 140 Longitudinal Long transverse Short transverse 360 350 340 420 410 400 6 4 2.5 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 BS3763 “The International S
18、ystem of units (SI)”, and in PD 5686, “The use of SI units”. See also BS350,“Conversion factors and tables”. S o BS2L93:1971 BSI 01-2000 3 Appendix A British Standards covering other forms of material of similar composition Form Solution treated and aged at room temperature Solution treated and prec
19、ipitation treated Supplied for solution treatment by the user Bars and extruded sections (not exceeding200mm diameter or minor sectional dimension) BS L 102 BS L 65 Forging stock and forgings BS L 103 BS L 77 Hexagonal bars for nuts, couplings and hollow machinedparts (free from peripheral and asymm
20、etriccoarse grain) BS L 87 Sheet and strip BS L 70 BS L 104 BS L 106 a Aluminium-coated sheet and strip BS L 72 BS L 73 BS L 107 a Close toleranced sheet and strip (aluminium-coated) BS L 89 BS L 90 BS L 108 a Tube (not exceeding10mm wall thickness) BS L 105 BS L 63 Wire for solid, cold-forged rivet
21、s (notexceeding10mm diameter) BS L 37 Plate: not controlled stretched BS L 94 a In course of preparation.BS 2L 93:1971 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 s
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