316L材质说明

STAINLESSSTEELPRODUCTDATABULLETIN•ExcellentCorrosionResistance•GoodElevatedTemperatureStrength•GoodPittingResistanceEconomicalOxidationResistanceApplicationsPotentialType316StainlessSteeliswidelyusedinapplicationsrequiringcorrosionresistancesuperiortoType304,orgoodelevatedtemperaturestrength.Typicalusesincludeexhaustmanifolds,furnaceparts,heatexchangers,jetengineparts,pharmaceuticalandphotographicequipment,valveandpumptrim,chemicalequipment,digesters,tanks,evaporators,pulp,paperandtextileprocessingequipment,partsexposedtomarineatmospheresandtubing.Type316Lisusedextensivelyforweldmentswhereitsimmunitytocarbideprecipitationduetoweldingassuresoptimumcorrosionresistance.316/316L-B-08-01-07UNSS31600ANDS31603316316LTheinformationanddatainthisproductdatabulletinareaccuratetothebestofourknowledgeandbelief,butareintendedforgeneralinformationonly.Applicationssuggestedforthematerialsaredescribedonlytohelpreadersmaketheirownevaluationsanddecisions,andareneitherguaranteesnortobeconstruedasexpressorimpliedwarrantiesofsuitabilityfortheseorotherapplications.Datareferringtomechanicalpropertiesandchemicalanalysesaretheresultoftestsperformedonspecimensobtainedfromspecificlocationsoftheproductsinaccordancewithprescribedsamplingprocedures;anywarrantythereofislimitedtothevaluesobtainedatsuchlocationsandbysuchprocedures.Thereisnowarrantywithrespecttovaluesofthematerialsatotherlocations.AKSteelandtheAKSteellogoareregisteredtrademarksofAKSteelCorporation.Type316Lisanextra-lowcarbonversionofType316thateliminatesharmfulcarbideprecipitationduetowelding.CompositionType316Type316L%%Carbon0.08max.0.03max.Manganese2.00max.2.00max.Phosphorus0.045max.0.045max.Sulfur0.030max.0.03max.Silicon0.75max.0.75max.Chromium16.00-18.0016.00-18.00Nickel10.00-14.0010.00-14.00Molybdenum2.00-3.002.00-3.00Nitrogen0.10max.0.10max.IronBalanceBalanceAvailableFormsAKSteelproducesTypes316and316LStainlessSteelsinthicknessesfrom0.01to0.25(0.25to6.35mm)max.andwidthsupto48(1219mm).Forotherthick-nessesandwidths,inquire.MetricPracticeValuesshowninthisbulletinwereestablishedinU.S.customaryunits.ThemetricequivalentsofU.S.custom-aryunitsshownmaybeapproximate.Conversiontothemetricsystem,knownastheInternationalSystemofUnits(SI),hasbeenaccomplishedinaccordancewithASTME380.Thenewton(N)hasbeenadoptedbytheSIasthemet-ricstandardunitofforceasdiscussedintheAISIMetricPracticeGuide.Thetermforforceperunitofarea(stress)isthenewtonpersquaremetre(N/m2).Sincethiscanbealargenumber,theprefixmegaisusedtoindicate1,000,000unitsandthetermmeganewtonpersquaremetre(MN/m2)isused.Theunit(N/m2)hasbeendesig-2AKSTEEL316/316LSTAINLESSSTEELTableofContentsPageApplicationsPotential................................................1ProductDescription...................................................2Composition..............................................................2AvailableForms.........................................................2MetricPractice..........................................................2MechanicalProperties...............................................3PhysicalProperties....................................................4CorrosionResistance.................................................5OxidationResistance.................................................5HeatTreatments........................................................5ColdWorking.............................................................5Formability.................................................................5Specifications............................................................5Weldability.................................................................5PRODUCTDESCRIPTIONTable1TypicalRoomTemperaturePropertiesElongationUTS0.2%YS%in2Hardnessksi(MPa)ksi(MPa)(50.8mm)RockwellType31684.0(579)42.0(290)50B79Type316L81.0(558)42.0(290)50B79Table2ElevatedTemperaturePropertiesElongationTemperatureUTS0.2%YS%in2°F(°C)ksi(MPa)ksi(MPa)(50.8mm)400(204)81.0(558)35.0(241)51600(316)78.0(538)31.0(214)48800(427)76.0(524)27.5(190)471000(538)70.0(483)24.0(165)441200(649)57.0(393)21.0(145)401400(760)35.0(241)18.0(124)371600(871)24.0(165)16.0(110)44Table3StressRupturePropertiesTestStress,ksi(MPa),forrupturein:Temperature1,00010,000100,000°F(°C)hourshourshours1100(593)36.0(248)28.0(193)25.0(172)1200(649)24.0(165)16.5(114)13.5(94)1300(704)15.5(106)10.0(69)7.0(48)1400(760)10.0(69)6.0(41)3.5(24)1500(816)6.0(41)3.5(24)2.0(14)1600(871)3.5(24)––––3natedapascal(Pa).TherelationshipbetweentheU.S.andtheSIunitsforstressis:1000pounds/in2=1kip/in2=6.8948meganewtons/m2(MN/m2)=6.8948megapascals(MPa).MechanicalPropertiesPhysicalPropertiesDensity,0.29lbs/in37.99g/cm3ElectricalResistivity,microhm-in(microhm-cm)68°F(20°C)–29.4(74)SpecificHeat,BTU/lb/°F(kJ/kg•K)32-212°F(0-100°C)–0.12(0.50)ThermalConductivity,BTU/hr/ft2/ft/°F(W/m•K)at212°F(100°C)–9.4(16.2)at932°F(500°C)–12.4(21.4)MeanCoefficientofThermalExpansion,in/in/°F(µm/m•K)32-1212°F(0-100°C)–8.9x10-6(16.0)32-1600°F(0-315°C)–9.0x10-6(16.2)32-1000°F(0-538°C)–9.7x10-6(17.5)32-1200°F(0-649°C)–10.3x10-6(