1、BRITISH STANDARD AEROSPACE SERIES BS HC 502:1981 (Superseding BS HC 501) Specification for Copper base aluminium-nickel-iron alloy castings (620 MPa) (Al 9.5, Ni 5, Fe 5) UDC 629.7:669.3571241 14BS HC502:1981 This British Standard, having been prepared under the directionof the Aerospace Standards C
2、ommittee, was published under the authority ofthe Executive Board and comesinto effect on 30 September 1981 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/60 Draft for comment 80/79049 DC ISBN 0 580 12327 8 A British Standard does not purport to
3、 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 This document comprises a front cover, an inside front cover,
4、pagesi andii, page1 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 publication Amd. No. Date of issue CommentsBSHC502:1981 BSI 01-2000 i C
5、ontents Page 1 Inspection and testing procedure 1 2 Chemical composition 1 3 Condition 1 4 Mechanical properties 1ii blankBSHC502:1981 BSI 01-2000 1 1 Inspection and testing procedure This British Standard shall be used in conjunction with the relevant sections of the latest issue of BSHC 100 as fol
6、lows: 2 Chemical composition The re-melting stock and the castings shall contain: 3 Condition Castings shall be supplied as cast. 4 Mechanical properties 4.1 Tensile. The tensile properties obtained from test pieces representing castings, selected, prepared and tested in accordance with the relevant
7、 requirements of BSHC 100, shall be not less than the following values: Re-melting stock sections 1 and 2 Precision castings sections 1 and 3 Sand castings sections 1 and 4 Centrifugal castings sections 1 and 5 Element % min. max. Silicon 0.10 Manganese 1.5 Aluminium 8.8 10.0 Iron 4.0 5.5 Magnesium
8、0.05 Nickel 4.0 5.5 Lead 0.01 Tin 0.1 Zinc 0.50 Copper Remainder 0,2% proof stress Tensile strength Elongation MPa MPa % 250 620 10BSHC 502:1981 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It
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