ASTM B227-04冷拉包铜钢丝

Designation:B227–04StandardSpecificationforHard-DrawnCopper-CladSteelWire1ThisstandardisissuedunderthefixeddesignationB227;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thisspecificationcoversbarehard-drawnroundcopper-cladsteelwireforelectricalpurposes(Note1).NOTE1—Wireorderedtothisspecificationisnotintendedforredraw-ing.Ifwireisdesiredforthispurpose,consultthemanufacturer.1.2Fourgradesofwirearespecified,designatedasfollows(Note2):Grade40HS,Grade40EHS,Grade30HS,andGrade30EHS.NOTE2—Thegradescoveredbythisspecificationcorrespondtothefollowingcommercialdesignations:Grade40HS,HighStrength,40%Conductivity.Grade40EHS,ExtraHighStrength,40%ConductivityGrade30HS,HighStrength,30%Conductivity.Grade30EHS,ExtraHighStrength,30%Conductivity.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesareinSIunits.2.ReferencedDocuments2.1Thefollowingdocumentsoftheissueineffectondateofmaterialpurchaseformapartofthisspecificationtotheextentreferencedherein.2.2ASTMStandards:2B193TestMethodforResistivityofElectricalConductorMaterialsB258SpecificationforStandardNominalDiametersandCross-SectionalAreasofAWGSizesofSolidRoundWiresUsedasElectricalConductors2.3NationalInstituteofStandardsandTechnology:NBSHandbook100—CopperWireTables33.OrderingInformation3.1Ordersformaterialunderthisspecificationshallincludethefollowinginformation:3.1.1Quantityofeachsizeandgrade,3.1.2Wiresize:diameterininches(see5.1andTable1),3.1.3Grade(see1.2andTable1),3.1.4Methodofmeasuringelongation(see7.3and7.4),3.1.5Packagesize(see14.1),3.1.6Specialpackagemarking,ifrequired(Section13),and3.1.7Placeofinspection(Section15).4.Material4.1Thewireshallbecomposedofasteelcorewithasubstantiallyuniformandcontinuouscoppercladdingthor-oughlybondedtoitthroughout.4.2Thefinishedcopper-cladsteelwireshallconformtotherequirementsprescribedinthisspecification.5.DimensionsandPermissibleVariations5.1Thesizeshallbeexpressedasthediameterofthewireindecimalfractionsofaninchusingfourplacesofdecimals,thatis,intenthsofmils(Note3).NOTE3—ThevaluesofwirediametersinTable1aregiventothenearest0.0001in.andcorrespondtothestandardsizesgiveninSpecifi-cationB258.Inspecifyingdiametersofwireorininspectingwire,expressthediametertothefourthdecimalplace.ThediametersprecededbyasterisksarenotintheAmericanWireGageseriesandarealsogiventofourplacesofdecimals.TheycorrespondtocertainnumbersoftheBirminghamWireGageoftheBritishStandardWireGageandareusedforcommunicationlines.Theuseofgagenumbersinspecifyingwiresizesisnotrecognizedinthesespecificationsbecauseofthepossibilityofconfusion.AnexcellentdiscussionofwiregagesandrelatedsubjectsiscontainedinNBSHandbook100oftheNationalInstituteofStandardsandTechnology.31ThisspecificationisunderthejurisdictionoftheASTMCommitteeB01onElectricalConductorsandisthedirectresponsibilityofSubcommitteeB01.06onCompositeConductors.CurrenteditionapprovedApril1,2004.PublishedApril2004.Originallyapprovedin1948.Lastpreviouseditionapprovedin2003asB227–03.2ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.3AvailablefromNationalInstituteofStandardsandTechnology(NIST),100BureauDr.,Stop3460,Gaithersburg,MD20899-3460.1Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.5.2WithintherangeofdiametersincludedinTable1,thewireshallnotvaryfromthespecifieddiameterbymorethanthefollowingamountsroundedofftothenearest0.1mil(0.0001in.):SpecifiedDiameter,in.(mm)PermissibleVariationsinSpecifiedDiameter0.2043(5.189)to0.1000(2.540),incl61.5%0.0999(2.537)to0.0800(2.032),incl60.0015in.(1.5mils)(0.038mm)0.0799(2.029)to0.0600(1.524),incl+0.0010in.(1.0mils)(0.025mm)–0.0015in.(1.5mils)(0.038mm)0.0599(1.521)andunder60.0010in.(1.0mils)(0.025mm)5.3Tenpercent,butnotlessthanfivecoilsorspools(orallifthelotislessthanfive)fromanylotofwire,shallbegagedatthreeplaces.Ifaccessible,onegagingshallbetakenneareachendandonenearthemiddle.Ifanyoftheselectedcoilsorspoolsfailtoconformtotherequirementsfordiameterasprescribedin5.2,allcoilsorspoolsshallbegagedinthemannerspecified.6.Workmanship,Finish,andAppearance6.1Thesurfaceofthewireshallbesmoothandfreefromimperfectionsnotconsistentwithgoodcommercialpractice.7.TensileProperties7.1ThewireshallconformtothetensilerequirementsprescribedinTable1(Note4).NOTE4—Theapproximatepropertiesofhard-drawncopper-cladsteelwireareshowninTable2fortheinformationoftheuserofthisspecification.TABLE1TensileRequirementsNominalDiameter,in.Areaat20°CTensileStrength,min,psiAcmilin.2,AGrade40HSGrade40EHSGrade30HSGrade30EHS0.2043417400.03278108000...1200001425000.1819330900.02599113000...1250001505000.1650B272300.02138118000...13000