Designation:A370−17StandardTestMethodsandDefinitionsforMechanicalTestingofSteelProducts1ThisstandardisissuedunderthefixeddesignationA370;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thesetestmethods2coverproceduresanddefinitionsforthemechanicaltestingofsteels,stainlesssteels,andrelatedalloys.Thevariousmechanicaltestshereindescribedareusedtodeterminepropertiesrequiredintheproductspecifications.Variationsintestingmethodsaretobeavoided,andstandardmethodsoftestingaretobefollowedtoobtainreproducibleandcomparableresults.Inthosecasesinwhichthetestingrequirementsforcertainproductsareuniqueoratvariancewiththesegeneralprocedures,theproductspecificationtestingrequirementsshallcontrol.1.2Thefollowingmechanicaltestsaredescribed:SectionsTension6to14Bend15Hardness16Brinell17Rockwell18Portable19Impact20to30Keywords321.3Annexescoveringdetailspeculiartocertainproductsareappendedtothesetestmethodsasfollows:AnnexBarProductsAnnexA1TubularProductsAnnexA2FastenersAnnexA3RoundWireProductsAnnexA4SignificanceofNotched-BarImpactTestingAnnexA5ConvertingPercentageElongationofRoundSpecimenstoEquivalentsforFlatSpecimensAnnexA6TestingMulti-WireStrandAnnexA7RoundingofTestDataAnnexA8MethodsforTestingSteelReinforcingBarsAnnexA9ProcedureforUseandControlofHeat-CycleSimulationAnnexA101.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.1.5Whenthisdocumentisreferencedinametricproductspecification,theyieldandtensilevaluesmaybedeterminedininch-pound(ksi)unitsthenconvertedintoSI(MPa)units.Theelongationdeterminedininch-poundgaugelengthsof2or8in.maybereportedinSIunitgaugelengthsof50or200mm,respectively,asapplicable.Conversely,whenthisdocumentisreferencedinaninch-poundproductspecification,theyieldandtensil...
