BS 970-3 1991
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ID： |
264EAA63B2E641848D33A7037B78CFDE |
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文件大小(MB)： |
0.22 |
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页数： |
38 |
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文件格式： |
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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 970-3:1991,Incorporating,Amendment Nos. 1,and 2,Specification for,Wrought steel for,mechanical and allied,engineering,purposes —,Part 3: Bright bars for general,engineering purposes,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Fri Jul 20 10:07:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 970-3:1991,This British Standard, having,been prepared under the,direction of the Iron and Steel,Standards Policy Committee,was published under the,authority of the Standards,Board and comes,into effect on,20 December 1991,. BSI 11-1998,First published July 1941,Second edition October 1942,Third edition March 1947,Fourth edition January 1955,Fifth edition July 1971,Sixth edition December 1991,The following BSI references,relate to the work on this,standard:,Committee reference ISM/31,Draft for comment 91/46105 DC,ISBN 0 580 1 9999 1,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Iron and Steel,Standards Policy Committee (ISM/-) to Technical Committee ISM/31, upon,which the following bodies were represented:,Associated Offices Technical Committee,British Chain Manufacturers’ Association,British Coal Corporation,British Forging Industry Association,British Industrial Fasteners Federation,British Railways Board,British Steel Industry,Cold Rolled Sections Association,Department of Trade and Industry (National Physical Laboratory),Engineering Industries Association,Federation of British Engineers’ Tool Manufacturers,Lloyds Register of Shipping,Ministry of Defence,National Association of Steel Stockholders,Road Vehicle Spring Society,Society of Motor Manufacturers and Traders Limited,Stainless Steel Fabricators’ Association of Great Britain,Amendments issued since publication,Amd. No. Date Comments,7227 September,1992,8974 November,1995,Indicated by a sideline in the margin,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Fri Jul 20 10:07:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 970-3:1991,. BSI 11-1998 i,Contents,Page,Committees responsible Inside front cover,Foreword iii,1 Scope 1,2 Definitions and symbols 1,3 Information and requirements to be agreed and to be documented 2,4 General 2,5 Steelmaking process and casting methods 3,6 Dimensional tolerances 3,7 Selection and preparation of test samples 4,8 Test methods and test results 5,9 Chemical composition 6,10 Mechanical properties 6,11 Retests 8,12 Freedom from defects 8,13 Marking 9,Appendix A Options 30,Table 1 — Tolerances for cold drawn bars 3,Table 2 — Tolerances for turned bars 4,Table 3 — Tolerances for precision ground bars 4,Table 4 — Straightness tolerances 4,Table 5 — Maximum limits on residual elements 6,Table 6 — Permitted variations of product analysis from specified range 6,Table 7 — Rounds, squares and hexagons in sizes from 10 mm up to and,including 100 mm diameter or across flat: maximum permissible,surface defects 8,Table 8 — Flats greater than 105 mm wide in free-cutting,semi-free-cutting and carbon steels: maximum permissible,surface defects 9,Table 9 — Flats greater than 105 mm wide in hot and cold,forging steels and low alloy steels: maximum permissible,defect depths 9,Table 10 — Flats equal to or less than 105 mm wide in,free-cutting, semi-free-cutting and carbon steels: maximum,permissible defect depths 10,Table 11 — Flats equal to or less than 105 mm wide in hot and,cold forging steels and low alloy steels: maximum permissible,defect depths 10,Table 12 — Chemical composition: free-cutting steels 10,Table 13 — Chemical composition: carbon and carbon manganese,steels 11,Table 14 — Chemical composition: case hardening steels (carbon and,carbon manganese steels) 11,Table 15 — Chemical composition: alloy case hardening steels 11,Table 16 — Chemical composition: alloy direct hardening steels 12,Table 17 — Chemical composition: ferritic and martensitic stainless,and heat resisting steels 12,Table 18 — Chemical composition: Austenitic stainless and heat,resisting steels 13,Table 19 — Mechanical properties for free-cutting steels 14,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Fri Jul 20 10:07:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 970-3:1991,ii . BSI 11-1998,Page,Table 20 — Mechanical properties for carbon and carbon manganese,steels 15,Table 21 — Mechanical properties for alloy steels 18,Table 22 — Mechanical properties for case hardening steels 23,Table 23 — Heat treatment and mechanical properties for ferritic and,martensitic stainless and heat resisting steels 24,Table 24 — Softening treatment and mechanical properties for austenitic,s……
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