Designation:B452−09(Reapproved2015)StandardSpecificationforCopper-CladSteelWireforElectronicApplication1ThisstandardisissuedunderthefixeddesignationB452;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisspecificationcoversbareroundcopper-cladsteelwireforelectronicapplication.1.2Fourclassesofcopper-cladsteelwirearecoveredasfollows:1.2.1Class30HS—Nominal30%conductivityhard-drawn,1.2.2Class30A—Nominal30%conductivityannealed,1.2.3Class40HS—Nominal40%conductivityhard-drawn,and1.2.4Class40A—Nominal40%conductivityannealed.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesareinSIunits.2.ReferencedDocuments2.1Thefollowingdocumentsoftheissueineffectonthedateofmaterialpurchaseformapartofthisspecificationtotheextentreferencedherein:2.2ASTMStandards:2B193TestMethodforResistivityofElectricalConductorMaterials2B258SpecificationforNominalDiametersandCross-SectionalAreasofAWGSizesofSolidRoundWiresUsedasElectricalConductors22.3NationalInstituteofStandardsandTechnology:NBSHandbook100—CopperWireTables33.OrderingInformation3.1Ordersformaterialunderthisspecificationshallincludethefollowinginformation:3.1.1Quantityofeachsizeandclass,3.1.2Wiresize,diameterininches(see5.3andTable1),3.1.3Classofwire(see1.2andTable1),3.1.4Packagingandshipping(Section10),3.1.5Ifinspectionisrequired(see6.3.3),and3.1.6Placeofinspection(see6.1).4.Material4.1Thewireshallconsistofacoreofhomogeneousopen-hearth,electric-furnace,orbasic-oxygensteelwithacontinuousoutercladdingofcopperthoroughlybondedtothecorethroughoutandshallbeofsuchqualityastomeettherequirementsofthisspecification(Note1).NOTE1—Thecopper-cladsteelwireprovidesahigh-strengthconductorforuseinwireandcablewheregreaters...
