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ASTMB230

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2012-08-25 0人阅读 0 0 0 暂无简介 举报

简介:本文档为《ASTMB230pdf》,可适用于经济金融领域

Designation:BBM–(Reapproved)StandardSpecificationforAluminum–HWireforElectricalPurposesThisstandardisissuedunderthefixeddesignationBBMthenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevisionAnumberinparenthesesindicatestheyearoflastreapprovalAsuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapprovalThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefenseScopeThisspecificationcoversaluminum–H(extrahard)roundwireforelectricalpurposesThevaluesstatedininchpoundorSIunitsaretoberegardedseparatelyasstandardThevaluesineachsystemarenotexactequivalentstherefore,eachsystemshallbeusedindependentlyoftheotherCombiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecificationFordensity,resistivity,andtemperature,thevaluesstatedinSIunitsaretoberegardedasstandardNOTEPriortoaluminumwasdesignatedECaluminumNOTEThealuminumandtemperdesignationsconformtoANSIHHMAluminumcorrespondstoUNSAinaccordancewithPracticeENOTEFordefinitionsoftermsfoundinthisspecificationrelatingtouninsulatedelectricalconductorsseeTerminologyBReferencedDocumentsThefollowingdocumentsoftheissueineffectonthedateofmaterialpurchaseformapartofthisspecificationtotheextentreferencedhereinASTMStandards:BTestMethodforResistivityofElectricalConductorMaterialsBSpecificationforAluminumDrawingStockforElectricalPurposesBTerminologyRelatingtoUninsulatedMetallicElectricalConductorsBBMTestMethodsofTensionTestingWroughtandCastAluminumandMagnesiumAlloyProductsEPracticeforNumberingMetalsandAlloys(UNS)ANSIStandard:ANSIHAmericanNationalStandardforAlloyandTemperDesignationsSystemsforAluminumANSIHMAmericanNationalStandardforAlloyandTemperSystemsforAluminumMetricNISTDocument:NBSHandbook–CopperWireTablesTerminologyDefinitionsofTermsSpecifictoThisStandard:lotagroupofproductionunits,uptolbkgofmass,ofonetypeandsizeofwire,whichwasproducedduringthesametimeperiod,undersimilarproductionconditions,andispresentedforacceptanceatthesametime(ExplanatoryNoteandNote)productionunitacoil,reel,spool,orotherpackageofwirethatrepresentsasingleusablelengthsampletheproductionunitorunitsfromwhichatestspecimenorspecimenshasbeenremoved,andwhichisconsideredtohavepropertiesrepresentativeofthelotspecimenalengthofwireremovedfortestpurposesOrderingInformationOrdersformaterialunderthisspecificationshallincludethefollowinginformation:Quantityofeachsize,Wiresize(seeandTableorTable),Specialtensiontest,ifrequired(seeand),Frequencyofbendingtest(seeand),Specialjointingprocedures,ifpermitted(see),Placeofinspection(see),Packagesizeandtype(see),andSpecialpackagemarking,ifrequired(see)MaterialsandManufactureThealuminumwireshallbemadefromdrawingstockmeetingtherequirementsofSpecificationBThisspecificationisunderthejurisdictionofASTMCommitteeBonElectricalConductorsandisthedirectresponsibilityofSubcommitteeBonConductorsofLightMetalsCurrenteditionapprovedApril,PublishedAprilOriginallyapprovedinLastpreviouseditionapprovedinasBBM–ForreferencedASTMstandards,visittheASTMwebsite,wwwastmorg,orcontactASTMCustomerServiceatserviceastmorgForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsiteAvailablefromAmericanNationalStandardsInstitute(ANSI),WrdSt,thFloor,NewYork,NYAvailablefromNationalInstituteofStandardsandTechnology(NIST),BureauDr,Stop,Gaithersburg,MDCopyright©ASTMInternational,BarrHarborDrive,POBoxC,WestConshohocken,PA,UnitedStatesWorkmanship,FinishandAppearanceThewireshallbefreeofimperfectionsnotconsistentwithgoodcommercialpracticeTensilePropertiesTensileStrengthandElongationThewireshallconformtothetensilestrengthandelongationrequirementssetforthinTableorTable(ExplanatoryNote)Whenrequestedbythepurchaser,tensiontestsshallbemadeofspecimensofwirecontainingjointsmadeinthedrawingstockorinthewirepriortofinaldrawingSuchtestsshallindicatetensilestrengthsnotlessthanofthevaluesforindividualtestsshowninTableorTableWhenrequestedbythepurchaser,tensiontestsofspecimenscontainingjointsinthefinishedwire,orinthefinaldrawing,ifpermitted,shallbemadeSuchtestsshallindicatetensilestrengthstobenotlessthanksiMPaforelectricbuttweldedjoints,andnotlessthanksiMPaforcoldpressureweldedjointsandelectricbutt,coldupsetweldedjointsBendingPropertiesThewireshallbefreeofbrittlenessasevidencedbyitsabilitytobecoiledorloopedarounditsowndiameterwithorwithoutamandrelNofractureshalloccurSlightsurfacechecksshallnotconstitutecauseforrejectionResistivityTheelectricalresistivityshallnotexceedthevaluesshowninTable(ExplanatoryNote)DensityForthepurposeofcalculatinglineardensity,crosssection,andsoforth,thedensityofaluminumshallbetakenaskgmlbinat°C°FDiameterThediameterofthewireshallbespecifiedininchestothenearestinorthediameterofthewireshallbespecifiedinmillimetrestothenearestmmforwireslessthanmmindiameter,andtothenearestmmforwiresmmindiameterandlargerTheactualwirediametershallnotvaryfromthespecifieddiameterbymorethanthevaluesshowninTableJointsNojointsshallbemadeinthefinishedwireexceptasprovidedinJointsmaybemadeinthedrawingstockandinthewirepriortofinaldrawingandshallbeinaccordancewithgoodcommercialpracticeIfagreeduponbetweenthemanufacturerandthepurchaser,jointsmaybemadeduringthefinaldrawingorinthefinishedwirebyelectricbuttwelding,coldpressurewelding,orelectricbutt,coldupsetwelding,subjecttothefollowinglimitationsTABLETensileStrengthandElongationRequirementsDiameter,inTensileStrength,minksiElongationinin,min()AverageforaLotAIndividualTestsAverageforaLotIndividualTeststototototototototototototoAForwirediameterswithintoin,theminimumaveragetensilestrengthforalotmaybeestimatedfromthefollowinglogarithmicequationforprocesscontrolpurposestomeettherequirementsofthisspecification:Tensilestrength,ksi=–ln(diameterofwire,in)RequirementsstatedinthetablearetobeusedforallotherpurposesTABLETensileStrengthandElongationRequirementsDiameter,mmTensileStrength,minMPaElongationinmm,min()AverageforaLotAIndividualTestsAverageforaLotIndividualTeststototototototototototototoAForwirediameterswithintommtheminimumaveragetensilestrengthforalotmaybeestimatedfromthefollowinglogarithmicequationforprocesscontrolpurposestomeettherequirementsofthisspecification:TensileStrength,MPa=–ln(diameterofwire,mm)RequirementsstatedinthetablearetobeusedforallotherpurposesTABLEElectricalResistivityRequirementsat°C(°F)andEquivalentCopperResistivityANOTEThevaluesinboldfacearestandardothervaluesareforinformationonlyVolumeConductivityElectricalResistivityIACSVolumeMassV·mmmµVinµV·cmV·cmilftV·lbmileV·gmAverageforlotIndividualtestsCopperequivalentATheequivalentresistivityvaluesforIACSconductivitywereeachcomputedfromthefundamentalIECvalue(⁄V·mmm)usingconversionfactorseachaccuratetoatleastsevensignificantfiguresCorrespondingvaluesforaluminumconductivitieswerederivedfromthesebymultiplyingbythereciprocaloftheconductivityratiosand,whereapplicable,alsobythedensityratios,bothaccuratetoatleastsevensignificantfiguresBBM–()Forwiresizesfromtointommindiameternotmorethanthreesuchjointsshallbepresentinanycoil,reel,orspoolofthespecifiednominalmassForwiresizesgreaterthaninmmdiameter,notmorethanofthecoils,reels,orspoolsshallcontainsuchjoints,andnosuchjointshallbecloserthanftmtoanotherjointortoeitherendofthewireNotmorethantwosuchjointsshallbepresentinanycoil,reelorspoolofthespecifiednominalmassSamplingSamplingFourtestspecimensshallbeobtained,onefromeachoffourproductionunits(ExplanatoryNote)TestMethodsDiameterMeasurethediameterofeachspecimenwithamicrometercalipergraduatedininincrementsormeasurethediameterofeachspecimenwithamicrometercalipergraduatedinminimummmincrementsforwireslessthanmmindiameter,orminimummmincrementsforwiresmmindiameterandlargerTaketwomeasurementsatonepoint,withthesecondmeasurementacrossthecrosssectionaldiameter°rotatedfromthefirstmeasurementAveragethetwomeasurementstoobtainthespecimendiameterShouldthemeasureddiameterofanyspecimenvaryfromthespecifieddiameterbyanamountgreaterthanthetolerancepermittedbyTable,thelotshallbeconsideredtonotmeetdiameterrequirementsFinishMakeavisualsurfacefinishinspectionwiththeunaidedeye(correctivelensesexcepted)ThesurfacefinishshallmeettherequirementsofShouldanyspecimenbefoundunacceptable,thelotshallbeconsideredtonotmeetsurfacefinishrequirementsTensilestrengthandelongationmaybedeterminedsimultaneouslyObtainthetensilestrength,inaccordancewithTestMethodsBBM,bydividingthemaximumloadresistedbythetensilespecimenbytheoriginalcrosssectionalareaofthespecimen,withthetensilestresstobeexpressedinksiMPaElongationisthepercentincreaseinlengthofthetensiletestspecimenasmeasuredbetweengagemarksoriginallyspacedinmmapartonthespecimenElongationmeasurementsarenotrequiredforwires<in<mmindiameterShouldanypartofthefracturetakeplaceoutsidetheelongationgagelines,orifexaminationofthetensilespecimenindicatesaflaw,thevaluesobtainedmaynotberepresentativeandatestonanothersectionofthespecimenmayberun(ExplanatoryNote)DeterminetheelectricalresistivityinaccordancewithTestMethodBTestResultsAnumericalaverageforthetensilestrength,elongation,andresistivityofthefourspecimensshallbecalculatedandshallbeconsideredthelotaverageConformanceCriteriaTobeconsideredinconformance,thelotaveragetestresultsshallmeettheaverageforalotrequirementsofTableorTableandTable,andthetestresultsofeachspecimenshallmeettheindividualtestsrequirementsofTableorTableandTableunlessotherwisespecifiedIfthelotaverageresultsareinconformance,andalloftheindividualspecimenresultsareinconformance,thelotshallbeconsideredinconformanceIfthelotaverageresultforoneormoreofthetestedpropertiesisnotinconformanceandoneormoreoftheindividualspecimenresultsisalsonotinconformance,thelotshallbeconsiderednotinconformanceIfthelotaverageresultsareinconformance,butoneormoreoftheindividualspecimenresultsarenotinconformance,thelotshallbeconsideredinconformanceexceptthattheproductionunitorunitsrepresentedbythenonconformingspecimenorspecimensshallberejectedIfthelotaverageresultsforoneormoreofthetestedpropertiesisnotinconformance,butalltheindividualspecimenresultsareinconformance,thenadditionaltestspecimensandtestsshallberequiredasfollows:Anadditionalsixtestspecimensshallbeobtained,oneeachfromsixproductionunitsotherthanthefouroriginallysampledTestsshallberunonthesixadditionalspecimens,andanumericalaverageofthetentestedspecimensshallbecalculatedandconsideredthelotaverageIfthetenspecimenlotaverageresultsareinconformance,andalltenoftheindividualspecimenresultsareinconformance,thelotshallbeconsideredinconformanceIfthetenspecimenlotaverageresultsforoneormoreofthetestedpropertiesarenotinconformance,orifoneormoreofthetenindividualspecimenresultsarenotinconformance,thelotshallbeconsiderednotinconformanceIntheeventalotisrejectedinaccordancewithor,productionunitsmakingupthatlotmaybeindividuallytestedAcceptanceofindividualproductionunitsfromarejectedlotshallbedependentontheindividualspecimentestresultsmeetingtheaverageforalotrequirementsofTableorTableandTableBending(Brittleness)Specimensfromanyproductionunitmaybetested,withthefrequencyofsamplingandtestingtobeagreeduponbythemanufacturerandthepurchaserInspectionUnlessotherwisespecifiedinthepurchasecontract,themanufacturershallberesponsiblefortheperformanceofallinspectionandtestingrequirementsspecifiedAlltestsandinspectionsshallbemadeattheplaceofmanufactureunlessotherwiseagreeduponbythemanufacturerandthepurchaserThemanufacturershallaffordthepurchaserreasonableaccesstothemanufacturer’sfacilitiesconsistentwiththepurchaser’sneedtoensurecompliancewiththisspecificationUnlessotherwiseagreeduponbythemanufacturerandthepurchaser,conformanceofthewiretotherequirementsspecifiedinSections,,,,andshallbedeterminedbyTABLEDiameterTolerancesSpecifiedDiameterPermissibleVariationsoftheMeanDiameterfromtheSpecifiedDiameter,PlusandMinusinmmtouptoinmmtotoinmmtoandoverBBM–()samplinginaccordancewithSectionofeachlotofwirepresentedforacceptanceThemanufacturershall,ifrequestedpriortoinspectionandtesting,certifythattheproductasawholewasmadeundersuchuniformconditionsthatcompliancewiththerequirementsofthisspecificationcanbedeterminedbythesampling,inspections,andtestsperformedinaccordancewithSection(ExplanatoryNoteandNote)PackagingandPackageMarkingPackagesizesandtypesshallbeasagreeduponbythemanufacturerandthepurchaseratthetimeofplacingtheindividualordersUnlessotherwisespecified,eachcoil,reel,orspoolshallcontainonecontinuouslengthofwireThewireshallbeprotectedagainstdamageinordinaryhandlingandshippingEachcoil,reel,spool,orotherpackageshallbearatagshowingthemanufacturer’snameortrademarktheproductidentificationasAluminum–Hwirethesize,length,andnetmassofthematerialAdditionalinformationshallbeasagreeduponbythemanufacturerandthepurchaseratthetimeofplacingtheindividualordersKeywordsaluminumelectricalconductoraluminumwireelectricalconductorwireEXPLANATORYNOTESNOTEAlotshouldcomprisematerialtakenfromaproductregularlymeetingtherequirementsofthisspecificationInspectionoflotsoflessthanlbkgofwirecannotbejustifiedeconomicallyForsmalllotsoflessthanlbkgthepurchasermayagreetothemanufacturer’sregularinspectionoftheproductasawholeasevidenceofacceptabilityofsuchsmalllotsNOTEEvidenceofstatisticalcontrolmustbedemonstratedTodothis,controlcharts,asdescribedinPartofASTMSTPDmaybeusedNOTEThespeedoftestingcanaffecttheresultsofthetensilestrengthandelongationtestInordertoensureuniformityinthetestmethodandvalidapplicabilityofthetestresultstotheconformancecriteria,itisrecommendedthattherateofseparationoftheheadsofthetensiletestmachinenotexceedinforeachinchormmforeachmillimetreoflengthbetweengripsperminuteNOTERelationshipsthatmaybeusefulinconnectionwiththevaluesofelectricalresistivityareshowninTableResistivityunitsarebasedontheInternationalAnnealedCopperStandard(IACS)adoptedbyIECin,whichis⁄V·mmmat°C(°F)forconductivityThevalueofV·mmmat°C(°F)istheinternationalequivalentofvolumeresistivityofannealedcopperequaltoconductivityAcompletediscussionofthissubjectiscontainedinNBSHandbookTheuseoffivesignificantfiguresinexpressingresistivitydoesnotimplytheneedforgreateraccuracyofmeasurementthanthatspecifiedinTestMethodBTheuseoffivesignificantfiguresisrequiredforreasonablyaccuratereversibleconversionfromonesetofresistivityunitstoanotherTheequivalentresistivityvaluesinTablewerederivedfromthefundamentalIECvalue(⁄V·mmm)computedtosevensignificantfiguresandthenroundedtofivesignificantfiguresNOTECumulativehistoricresultssecuredontheproductofasinglemanufacturerindicatingarecordofcontinualconformanceofthatproductwiththerequirementsofthisspecificationarenecessarytoensurethatthesamplecanbeassumedrepresentativeofthelot,andthattheconformancecriteriawilllargelyensurecomplianceofthelotwiththisspecificationThesamplesizesandconformancecriteriaareapplicableonlytolotsproducedbymanufacturersthatmeetthisrequirementNOTEElongationmeasurementsmadean

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