BS 1490-1988 Specification for aluminium and aluminium alloy ingots and castings for general engineering purposes
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ID： |
CD843A4015FB40789C00BB06A7802455 |
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文件大小(MB)： |
0.34 |
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页数： |
30 |
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日期： |
2013-6-1 |
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文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
BRITISH STANDARD BS 1490:1988,Incorporating,Amendment,Nos. 1 & 2,Specification for,Aluminium and,aluminium alloy ingots,and castings for general,engineering purposes,UDC 669.71– 412–14:621,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 29 10:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 1490:1988,This British Standard, having,been prepared under the direction,of the Non-ferrous Metals,Standards Committee, was,published under the authority of,the Board of BSI and comes,into effect on,30 June 1988,. BSI 12-1998,First published, August 1949,First revision October 1955,Second revision May 1963,Third revision December 1970,Fourth revision June 1988,The following BSI references,relate to the work on this,standard:,Committee reference NFM/35,Draft for comment 86/39422 DC,ISBN 0 580 16575 2,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Non-ferrous,Metals Standards Committee (NFM/-) to Technical Committee NFM/35, upon,which the following bodies were represented:,Aluminium Federation,Aluminium Stockholders’ Association,Association of Light Alloy Refiners Limited,Department of Trade and Industry (Minerals and Metals Division),Light Metal Founders’ Association,Magnesium Industry Council,Royal Institute of British Architects,Society of Motor Manufacturers and Traders Limited,The following bodies were also represented in the drafting of the standard,through subcommittees and panels:,BNF Metals Technology Centre,British Foundry Association,British investment Casting Trade Association,Institute of British Foundrymen,Amendments issued since publication,Amd. No. Date of issue Comments,6309 March 1990,6605 December 1990 Indicated by a sideline in the margin,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 29 10:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 1490:1988,. BSI 12-1998 i,Contents,Page,Committees responsible Inside front cover,Foreword ii,1 Scope 1,2 Definitions 1,3 General requirements 2,4 Specific requirements for ingots 2,5 Specific requirements for castings 6,6 Inspection procedures 6,7 Test samples 8,8 Test methods 9,Appendix A Information to be supplied by the purchaser 15,Appendix B Recommendations for optional supplementary,inspection and tests for castings 15,Appendix C Colour code for ingots 18,Appendix D Guide to the selection of alloys 18,Figure 1 — Sand or chill cast test samples: forms A and B 9,Figure 2 — Chill cast test samples: forms C and D 10,Figure 3 — Sand cast test sample: form E 11,Figure 4 — Sand cast test sample: form F 12,Figure 5 — Investment cast test sample: form G (“cast to size”) 13,Figure 6 — Investment cast test sample: form H 14,Table 1 — Chemical compositions of group A ingots and castings:,general purpose alloys 3,Table 2 — Chemical compositions of group B ingots and castings:,special purpose alloys 4,Table 3 — Chemical compositions of group C ingots and castings:,special purpose alloys of limited application 5,Table 4 — Mechanical properties for castings (obtained on,separately cast test samples) 7,Table 5 — Hardness of castings 8,Table 6 — Colour code for ingots 18,Table 7 — Machinability ratings of aluminium casting alloys 21,Table 8 — Comparison of casting characteristics and other properties 24,Publications referred to Inside back cover,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 29 10:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 1490:1988,ii . BSI 12-1998,Foreword,This British Standard has been prepared under the direction of the Non-ferrous,Metals Standards Committee. It is the fourth revision of BS 1490, which was,originally published in 1949 and subsequently revised in 1955, 1963 and 1970. It,supersedes the 1970 edition, which is withdrawn.,In this revision, two of the alloys in the previous edition, LM10 and LM18, have,been omitted. One new alloy, LM31, has been introduced and its requirements,are based on those of DTD 5008 B. Slight changes have been made to the,magnesium content permitted in LM4 and LM27 and in the copper content,permitted in LM25 and LM9. Limits have been imposed on the permitted level of,unnamed impurities in the alloys.,Requirements have been introduced for the frequency of analysis of ingots and for,the frequency of tensile testing of castings, other than pressure die castings.,Three additional mould designs for casting tensile test samples have been,introduced, two of these being specifically for investment cast samples.,A new appendix B “Recommendations for optional supplementary inspection and,tests for castings” is included,……
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