ASTM_A_679_-_A_679M_-_06_2012.pdf

Designation:A679/A679M06(Reapproved 2012)Standard Specification forSteel Wire,High Tensile Strength,Cold Drawn1This standard is issued under the fixed designation A679/A679M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers round,uncoated,high tensilestrength,cold-drawn steel spring wire,having properties andquality suitable for the manufacture of mechanical springs andwire forms subject to high static stresses or infrequent dynamicload,or both.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are not exact equivalents;therefore,each systemmust be used independently of the other.2.Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA510 Specification for General Requirements for Wire Rodsand Coarse Round Wire,Carbon SteelA510M Specification for General Requirements for WireRods and Coarse Round Wire,Carbon Steel(Metric)A700 Practices for Packaging,Marking,and Loading Meth-ods for Steel Products for ShipmentA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA941 Terminology Relating to Steel,Stainless Steel,RelatedAlloys,and FerroalloysE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 ANSI Standard:3B32.4 Preferred Metric Sizes for Round,Square,Rectangle,and Hexagon Metal Products2.3 Federal Standard:4Fed.Std.No.123 Marking for Shipment(Civil Agencies)2.4 AIAG Standard:5AIAGB-5 02.00 Primary Metals Identification Tag Applica-tion Standard3.Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication,refer to Terminology A941.4.Ordering Information4.1 It shall be the responsibility of the purchaser to specifyall requirements that are necessary for material under thisspecification.Such requirements may include,but are notlimited to,the following:4.1.1 Quantity(mass),4.1.2 Name of material(steel wire,high tensile strength,hard drawn),4.1.3 Dimensions(Table 1 and Section 9),4.1.4 Packaging(Section 15),4.1.5 Heat analysis report,if requested(6.2),4.1.6 Certification or test report,or both,if specified(Sec-tion 14),and4.1.7 ASTM designation and year of issue.NOTE1A typical ordering description is as follows:20 Mg hightensile strength,hard-drawn steel mechanical spring wire,5.00-mmdiameter,500-kg coils to ASTM A679/A679M dated _,or forinch-pound units,40 000-lb high tensile strength,hard-drawn steel me-chanical spring wire,0.192-in.diameter,in 1000-lb coils to ASTMA679/A679M dated _.5.Materials and Manufacture5.1 The steel may be made by any commercially acceptedsteel making process.The steel may be either ingot cast orcontinuous strand cast.The rod to be used in the manufactureof wire furnished to this specification shall be in accordancewith Specifications A510 or A510M.5.2 The finished wire shall be free from detrimental pipeand undue segregation.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.03 on Steel Rod and Wire.Current edition approved March 1,2012.Published March 2012.Originallyapproved in 1973.Last previous edition approved in 2006 as A679/A679M 06.DOI:10.1520/A0679_A0679M-06R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.4Available from Standardization Documents Order Desk,DODSSP,Bldg.4,Section D,700 Robbins Ave.,Philadelphia,PA 19111-5098.5Available from Automotive Industry Action Group(AIAG),26200 Lahser Rd.,Suite 200,Southfield,MI 48034.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1Copyright by ASTM Intl(all rights reserved);5.3 The wire shall be cold drawn to produce the desiredmechanical properties.5.4 The wire finish shall be suitable for forming or coiling.It is not intended that this material be furnished with a metalliccoating.6.Chemical Composition6.1 The steel shall conform to the requirements for chemicalcomposition prescribed in Table 2.6.2 Heat AnalysisEach heat of steel shall be analyzed bythe manufacturer to determine the percentage of elementsprescribed in Table 2.This analysis shall be made from a testspecimen preferably taken during the pouring of the heat.When requested,in the purchase order,the heat analysis shallbe reported to the purc