OK63.85isabasiccoatedniobium-stabilised18Cr12Ni2.8Moelectrodeforweldingsteelsofsimilarcomposition.Ithasverygoodresistanceagainstintergranularcorrosion.Theratherhighferritecontentincombinationwiththebasiccoatingprovidesagoodhotcrackingresistance.IthasthebesthotcrackingresistanceoftheE318typeelectrodes.Ferritemaytransformtobrittlephasesatelevatedtemperatures.To***oidexcessiveembrittlementoftheweldsthemaximumworkingtemperatureislimitedto400°C.TypicalTensilePropertiesAswelded保护气体ElongationTensileStrengthYieldStrengthISO---AWS35%640MPa490MPa夏比V型缺口冲击性能AsweldedImpactValueTestingTemperature保护气体65J20°CAWS45J-120°CAWS焊缝金属分析MnMnMoCNbSiFerriteFNNiNCr1.6%--------MoMnMoCNbSiFerriteFNNiNCr-2.7%-------CMnMoCNbSiFerriteFNNiNCr--0.04%------NbMnMoCNbSiFerriteFNNiNCr---0.55%-----SiMnMoCNbSiFerriteFNNiNCr----0.5%----FerriteFNMnMoCNbSiFerriteFNNiNCr-----5%---NiMnMoCNbSiFerriteFNNiNCr------13.0%--CrMnMoCNbSiFerriteFNNiNCr--------17.9%熔敷数据Fusiontimeperelectrodeat90%Imaxkgweldmetal/kgelectrodesNumberofelectrodes/kgweldmetal安培熔敷率电压V直径45sec0.66kg8150-80A1.0kg/h22V2.5x300mm58sec0.64kg4365-120A1.5kg/h23V3.2x350mm64sec0.64kg2875-160A2.0kg/h24V4.0x350mm)