BS 970-2 1988
|
ID： |
251C2F86A9664926B12E7E78F800654C |
|
文件大小(MB)： |
0.18 |
|
页数： |
16 |
|
文件格式： |
|
|
日期： |
2013-6-1 |
|
购买： |
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 970-2:1988,Incorporating,Amendment Nos. 1,and 2,Specification for,Wrought steels for,mechanical and allied,engineering,purposes —,Part 2: Requirements for steels for the,manufacture of hot formed springs,UDC 669.14-131:[669-122.4:669-15:669.018.27]:001.2,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Fri Jul 20 10:07:34 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 970-2:1988,This British Standard, having,been prepared under the,direction of the Iron and Steel,Standards Committee, was,published under the authority,of the Board of BSI and comes,into effect on,31 October 1988,. BSI 12-1998,First published July 1941,First revision October 1942,Second revision March 1947,Third revision January 1955,Fourth revision, as Part 5,June 1972,Fifth revision, as Part 2,October 1988,The following BSI references,relate to the work on this,standard:,Committee reference ISM/31,Draft for comment 87/36929 DC,ISBN 0 580 16869 7,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Iron and Steel,Standards Committee (ISM/-) to Technical Committee ISM/31, upon which the,following bodies were represented:,British Chain Manufacturers’ Association,British Coal,British Forging Industry Association,British Industrial Fasteners Federation,British Rail,British Steel Industry,Cold Rolled Sections Association,Department of Trade and Industry (National Physical Laboratory),Engineering Industries’ Association,Federation of British Engineers’ Tool Manufacturers,Institution of Production Engineers,Lloyds Register of Shipping,Ministry of Defence,National Association of Steel Stockholders,Road Vehicle Spring Society,Society of British Aerospace Companies Limited,Society of Motor Manufacturers and Traders Limited,Stainless Steel Fabricators’ Association of Great Britain,The following bodies were also represented in the drafting of the standard,through sub-committees and panels:,Spring Research and Manufacturers’ Association,Amendments issued since publication,Amd. No. Date of issue Comments,6190 August, 1989,6942 February, 1992 Indicated by a sideline in the margin,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Fri Jul 20 10:07:34 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 970-2:1988,. BSI 12-1998 i,Contents,Page,Committees responsible Inside front cover,Foreword ii,1 Scope 1,2 Definitions 1,3 General 1,4 Information to be supplied by the purchaser 1,5 Steelmaking processes and casting methods 1,6 Chemical composition 1,7 Freedom from defects 4,8 Surface condition 4,9 Condition of material on despatch 4,10 Physical properties 4,11 Selection and testing of specimens 4,12 Form of section 6,13 Marking 7,Appendix A Options 10,Appendix B Recommended maximum dimensions for flats and rounds 10,Figure 1 — Positions for decarburization measurements 6,Figure 2 — Edge profiles for flats 7,Figure 3 — Dimensions of rib and groove spring steel for plates 9.52 mm,thick and over 8,Table 1 — Steels to restricted chemical composition ranges.,Chemical composition 2,Table 2 — Composition of steels to hardenability requirements.,Chemical composition 2,Table 3 — Limits on residual elements 3,Table 4 — Permitted deviations from specified range on product analysis 3,Table 5 — Maximum acceptable depth for longitudinal defects on,hot-rolled or drawn bar 4,Table 6 — Maximum levels of functional decarburization for,hot-rolled or drawn flats 5,Table 7 — Steels to hardenability requirements 5,Table 8 — Average maximum inclusion levels 5,Table 9 — Normalizing and austenitizing temperatures for,hardenability tests 6,Table 10 — Tolerances on width and thickness for flats 8,Table 11 — Tolerances on concavity, convexity and parallelism,across the width for flats 8,Table 12 — Diameter and ovality tolerance for round bars 9,Table 13 — Recommended maximum dimensions for flats and rounds 10,Publications referred to Inside back cover,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Fri Jul 20 10:07:34 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 970-2:1988,ii . BSI 12-1998,Foreword,This Part of BS 970 has been prepared under the direction of the Iron and Steel,Standards Committee.,It forms Part 2 of a restructured BS 970 and is a revision of BS 970-5:1972,incorporating the requirements of BS 24-3A:1959. Both these standards are,withdrawn.,The restructured BS 970 consists of three Parts. Part 1 specifies general,inspection and testing procedures and specific requirements for carbon, carbon,manganese, alloy and stainless steels and was published in 1983. BS 970-4 was,published in 1970 and specif……
……