Designation:B528−16StandardTestMethodforTransverseRuptureStrengthofPowderMetallurgy(PM)Specimens1ThisstandardisissuedunderthefixeddesignationB528;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversdeterminationofthetransverserupturestrengthofsintered,includingpost-treated,powdermetallurgytestspecimensbysubjectingthemtoauniformlyincreasingtransverseforceundercontrolledconditions.Theterm“transverserupturestrength”asusedherein,definesthestress,calculatedfromtheflexureformularequiredtobreakaspecimenasasimplebeamsupportedneartheendsandapplyingtheforcemidwaybetweenthefixedlinecenterofthesupports.1.2Limitations—Thetransverserupturetestisonlyappli-cabletorelativelybrittlematerials.Incaseswhereaductilespecimenisbeingtestedandthepermanentdeflectionasaresultoftestingexceeds0.02in.(0.5mm),thetestresultsmaybequestionable.1.3TestMethodB406shouldbeconsultedfordeterminingthetransverserupturestrengthofcementedcarbides.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B243TerminologyofPowderMetallurgyB312TestMethodforGreenStrengthofSpecimensCom-pactedfromMetalPowdersB406TestMethodforTransverseRuptureStrengthofCe-mentedCarbidesB925PracticesforProductionandPreparationofPowderMetallurgy(PM)TestSpecimensE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Definitions—Fordefinitionsoftermsinthist...
