ASTM_A_401_-_A_401M_-_15.pdf

Designation:A401/A401M15Standard Specification forSteel Wire,Chromium-Silicon Alloy1This standard is issued under the fixed designation A401/A401M;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 and shaped chromium-silicon alloy steel spring wire having properties and qualityintended for the manufacture of springs resistant to set whenused at moderately elevated temperatures.This product is notmeant to be used for non-static applications involving moder-ate fatigue stresses(see Specification A1000/A1000M)or highcycle fatigue applications(see Specification A877/A877M).This wire shall be provided either in the annealed andcold-drawn or quench and tempered condition as specified bythe purchaser.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.2.1 Within the text,the inch-pound units are shown inbrackets.2.Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA510/A510M Specification for General Requirements forWire Rods and Coarse Round Wire,Carbon Steel,andAlloy SteelA700 Guide for Packaging,Marking,and Loading Methodsfor Steel Products for ShipmentA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA877/A877M Specification for Steel Wire,Chromium-Silicon Alloy,Chrome-Silicon-Vanadium Alloy ValveSpring QualityA1000/A1000M Specification for Steel Wire,Carbon andAlloy Specialty Spring QualityE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3.Ordering Information3.1 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:3.1.1 Quantity(mass),3.1.2 Name of material(chromium-silicon alloy steel wire),3.1.3 Dimensions(Table 1 and Section 8),3.1.4 Condition(Section 6),3.1.5 Packaging(Section 14),3.1.6 Heat analysis report,if requested(5.2),3.1.7 Certification or test report,or both,if specified(Sec-tion 13),and3.1.8 ASTM designation and year of issue.NOTE1A typical ordering description is as follows:20 000-kg,quench and tempered chromium-silicon alloy steel wire,size 6.00 mm in150 kg coils to ASTM A401/A401M dated _,or for inch-pound units,40 000-lb quench and tempered chromium-silicon alloy steel spring wire,size 0.250 in.in 350-lb coils to ASTM A401/A401M dated _.4.Materials and Manufacture4.1 The steel may be made by any commercially acceptedsteel making process.The steel may be either ingot cast orstrand cast.4.2 The finished wire shall be free from detrimental pipeand undue segregation.5.Chemical Composition5.1 The steel shall conform to the requirements of Grade9254 for chemical composition specified in Table 2.5.2 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,this shall be reported to the purchaser andshall conform to the requirements of Table 2.5.3 Product AnalysisAn analysis may be made by thepurchaser from finished wire representing each heat of steel.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 Nov.1,2015.Published November 2015.Originallyapproved in 1956.Last previous edition approved in 2010 as A401/A401M 10.DOI:10.1520/A0401_A0401M-15.2For 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 States1 The chemical composition thus determined,as to elementsrequired or restricted,shall conform to the product analysisrequirements in Table 4 of Specification A510/A510M.5.4 For referee purposes,Test Methods,Practices,andTerminology A751 shall be used.6.Mechanical Properties6.1 Annealed and Cold DrawnWhen purchased in theannealed and cold-drawn condition,the wire shall have beengiven a sufficient amount of cold working to meet the purchas-ers coiling requirements and shall be in a suitable condition