BS 1449-1 1991

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9CC89151368245599EBF00D474084EAF

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2013-6-1

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BRITISH STANDARD BS 1449-1.1:,1991,Steel plate, sheet and,strip —,Part 1: Carbon and carbon-manganese,plate, sheet and strip —,Section 1.1 General specification,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Aug 13 07:36:28 BST 2006, Uncontrolled Copy, (c) BSI,BS 1449-1.1:1991,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,31 October 1991,. BSI 12-1998,The following BSI references,relate to the work on this,standard:,Committee reference ISM/10,Draft announced in BSI News,August 1991,ISBN 0 580 19870 7,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/10, upon,which the following bodies were represented:,British Railways Board,British Steel Industry,Cold Rolled Sections Association,Society of Motor Manufacturers and Traders Limited,The following bodies were also represented in the drafting of the standard,through subcommittees and panels:,British Welded Steel Tube Association,Institution of Mechanical Engineers,National Association of Steel Stockholders,Amendments issued since publication,Amd. No. Date Comments,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Aug 13 07:36:28 BST 2006, Uncontrolled Copy, (c) BSI,BS 1449-1.1:1991,. BSI 12-1998 i,Contents,Page,Committees responsible Inside front cover,Foreword ii,0 Introduction 1,1 Scope 1,2 Definitions 1,3 General 5,4 Steelmaking process 5,5 Chemical composition 5,6 Freedom from defects 6,7 Condition of material on delivery 6,8 Number of tests 6,9 Tensile properties 6,10 Bending 6,11 Strain-age-embrittlement 6,12 Stabilization 6,13 Formability 6,14 Hardness 6,15 Decarburization test 6,16 Retests 6,17 Surface finish and surface inspection 7,18 Edge conditions 7,19 Inspection 7,20 Tolerances on dimensions and shape 7,21 Marking 7,Appendix A Product analysis and permitted variations 8,Appendix B Methods of test 8,Appendix C Determination of r values 11,Figure 1 — Bend test with the axis of the bend,parallel to the direction of rolling 9,Figure 2 — Bend test with the axis of the bend,at 90° to the direction of rolling 10,Figure 3 — Nomogram for determination of r values 12,Table 1 — Symbols for material conditions 2,Table 2 — Symbols for surface finishes and surface,inspection 3,Table 3 — Summary of material grades, chemical,compositions and types of steel available 4,Table 4 — Edge conditions 7,Table 5 — Permitted variations of product analysis,from specified range. Applicable to killed (K) steels only 9,Publication(s) referred to Inside back cover,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Aug 13 07:36:28 BST 2006, Uncontrolled Copy, (c) BSI,BS 1449-1.1:1991,ii . BSI 12-1998,Foreword,This Section of BS 1449 has been prepared under the direction of the Iron and,Steel Standards Policy Committee and is a new edition of section one of,BS 1449-1:1983. This Section of BS 1449, together with BS 1449-1.2 to 1.15 and,BS EN 10130, supersedes BS 1449-1:1983 which is withdrawn.,When EN 10130 “Cold rolled low carbon steel flat products for cold forming —,Technical delivery conditions” became available, it was a requirement that it,should be published as a British Standard and any conflicting national standards,withdrawn. This meant that the requirements for cold rolled wide strip specified,in section two of BS 1449-1:1983 had to be deleted with the exception of the,requirements for sheets for vitreous enamelling.,In view of the fact that there was other European work in hand which would also,affect BS 1449-1, the Technical Committee responsible considered that,BS 1449-1 should be split into a number of separately published Sections,mirroring as far as possible European work in hand or projected. In this way,when the equivalent European Standard becomes available and is published as a,British Standard, the appropriate Section of BS 1449-1 will be withdrawn.,In Europe the practice is to prepare separate standards for hot rolled and cold,rolled products and also for wide strip and narrow strip. Tolerance standards are,also prepared as separate publications. Consequently BS 1449-1:1983 has been,split into 15 separately published Sections as listed below. The related draft,European Standard, prEN, or Euronorm, EU, is indicated.,— Section 1.1, General specification.,— Section 1.2, Specification for hot rolled wide steel plate, sheet and wide strip,based on formability. (Re……

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