Designation:F139−12StandardSpecificationforWrought18Chromium-14Nickel-2.5MolybdenumStainlessSteelSheetandStripforSurgicalImplants(UNSS31673)1ThisstandardisissuedunderthefixeddesignationF139;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecificationcoversthechemical,mechanical,andmetallurgicalrequirementsforwrought18chromium-14nickel-2.5molybdenumstainlesssteelsheetandstripusedforthemanufactureofsurgicalimplants.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.2.ReferencedDocuments2.1ASTMStandards:2A262PracticesforDetectingSusceptibilitytoIntergranularAttackinAusteniticStainlessSteelsA480/A480MSpecificationforGeneralRequirementsforFlat-RolledStainlessandHeat-ResistingSteelPlate,Sheet,andStripA751TestMethods,Practices,andTerminologyforChemi-calAnalysisofSteelProductsE8/E8MTestMethodsforTensionTestingofMetallicMa-terialsE10TestMethodforBrinellHardnessofMetallicMaterialsE18TestMethodsforRockwellHardnessofMetallicMa-terialsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE45TestMethodsforDeterminingtheInclusionContentofSteelE112TestMethodsforDeterminingAverageGrainSizeE354TestMethodsforChemicalAnalysisofHigh-Temperature,Electrical,Magnetic,andOtherSimilarIron,Nickel,andCobaltAlloysE407PracticeforMicroetchingMetalsandAlloysIEEE/ASTMSI10AmericanNationalStandardforMetricPractice2.2ISOStandards:3ISO5832-1ImplantsforSurgery-MetallicMaterials—Part1:WroughtStainlessSteelISO6892MetallicMaterials—TensileTestingatAmbientTemperatureISO9...
