Designation:B213−17StandardTestMethodsforFlowRateofMetalPowdersUsingtheHallFlowmeterFunnel1ThisstandardisissuedunderthefixeddesignationB213;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedeterminationofaflowrate,bytheuseoftheHallFlowmeterfunnelofmetalpowdersandpowdermixtures.ItissuitableonlyforthosepowdersthatwillflowunaidedthroughtheHallFlowmeterfunnel.1.2Withtheexceptionofthevaluesfordensityandthemassusedtodeterminedensity,forwhichtheuseofthegrampercubiccentimetre(g/cm3)andgram(g)unitsisthelong-standingindustrypractice,thevaluesininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonly,andarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2B215PracticesforSamplingMetalPowdersB243TerminologyofPowderMetallurgyB855TestMethodforVolumetricFlowRateofMetalPowdersUsingtheArnoldMeterandHallFlowmeterFunnelB964TestMethodsforFlowRateofMetalPowdersUsingtheCarneyFunnel3.Terminology3.1Definitions—DefinitionsofpowdermetallurgytermscanbefoundinTerminologyB243.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1Hallflowrate(FRH),n—thetimerequiredforametalpowders...
