ASTM_A_229_-_A_229M_-_12.pdf

Designation:A229/A229M12Standard Specification forSteel Wire,Quenched and Tempered for MechanicalSprings1This standard is issued under the fixed designation A229/A229M;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope*1.1 This specification covers two classes of round andshaped quenched and tempered steel spring wire intendedespecially for the manufacture of mechanical springs and wireforms.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 necessarily exact equivalents;therefore,each system shall be used independently of the other.Combin-ing values from the two systems can result in non-conformancewith the standard.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 SpecificationsE1077 Test Methods for Estimating the Depth of Decarbur-ization of Steel Specimens3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 For definition of terms used in this specification,referto 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 or weight),4.1.2 Name of material(quenched and tempered steel me-chanical spring wire)and class(Table 1 or Table 2),4.1.3 Dimensions(Section 10),4.1.4 Chemical composition(Table 3),if required,4.1.5 Packaging(Section 16),4.1.6 Cast or heat analysis report,if desired(see 7.2),4.1.7 Certification or test report,or both,if specified(Sec-tion 15),and4.1.8 ASTM designation and date of issue.NOTE1A typical metric ordering description is as follows:10 000 kgquenched and tempered steel mechanical spring wire,Class I,8.00 mmdiameter,in 250-kg coils to ASTM A229 M xx,or for inch-pound units,20 000 lb quenched and tempered steel mechanical Spring Wire,ClassI 0.315 in.diameter,in 500-lb coils to ASTM A 229 xx.5.General Requirements5.1 Material furnished to this specification shall conform tothe applicable requirements of either Specification A510M orSpecification A510.6.Materials and Manufacture6.1 The steel may be made by any commercially acceptedsteel-making process.The steel shall be fully killed.6.2 The finished wire shall be free of detrimental pipe andundue segregation.6.3 The wire shall be quenched and tempered to produce thedesired mechanical properties.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 April 15,2012.Published April 2012.Originallyapproved in 1939.Last previous edition approved in 2005 A229/A229M 99(2005).DOI:10.1520/A0229_A0229M-12.2For 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.*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);7.Chemical Composition7.1 The steel shall conform to the requirements for chemicalcomposition prescribed in Table 3.7.2 Cast or Heat AnalysisEach cast or heat of steel shallbe analyzed by the manufacturer to determine the percentage ofelements prescribed in Table 3.This analysis shall be madefrom a test specimen preferably taken during the pouring of thecast or heat.When requested,this shall be reported to thepurchaser and shall conform to the requirements of Table 3.7.3 Product AnalysisAn analysis may be made by thepurchaser from finished wire representing each cast or heat ofsteel.The chemical composition thus determined,as to ele-ments required or restricted,shall conform to the productanalysis requirements specified in Table 7 of SpecificationA510 or A510M.7.4 For referee purposes,Test Methods,Practices,andTerminology A751 sh