Bare,corrosion-resistant,stabilised,chromium-nickel-molybdenumwireforweldingCr-Ni-MoandCr-Nistabilisedornon-stabilisedsteels.OKTigrod318Sihasgoodgeneralcorrosionresistance.Thealloyisstabilisedwithniobiumtoimproveresistancetotheintergranularcorrosionoftheweldmetal.Thehighersiliconcontentimprovestheweldingpropertiessuchaswetting.Duetostabiliationbyniobium,thisalloyisrecommendedforservicetemperaturesupto400°C.TypicalTensilePropertiesAsweldedElongationTensileStrengthYieldStrength35%615MPa460MPa夏比V型缺口冲击性能AsweldedImpactValueTestingTemperature40J20°C70J-60°C焊缝金属分析MnMnMoCuCNbSiFerriteFNNiCr1.7%--------MoMnMoCuCNbSiFerriteFNNiCr-2.60%-------CuMnMoCuCNbSiFerriteFNNiCr--0.10%------CMnMoCuCNbSiFerriteFNNiCr---0.05%-----NbMnMoCuCNbSiFerriteFNNiCr----0.50%----SiMnMoCuCNbSiFerriteFNNiCr-----0.8%---FerriteFNMnMoCuCNbSiFerriteFNNiCr------6%--NiMnMoCuCNbSiFerriteFNNiCr-------11.9%-CrMnMoCuCNbSiFerriteFNNiCr--------18.8%)