不锈钢用TIG焊丝类别品名AWS型号焊棒和焊丝化学成分(%)熔敷金属力学性能特征与用途CSiMnPSNiCrMoCuNbσ0.2(MPa)δb(MPa)δ(%)Akv(J)TIG焊丝TGS-308LER308L0.0130.431.860.0230.0029.9519.850.050.0742059045-196℃:78用于焊接18%Cr-8%Ni低碳不锈钢TGS-309LER309L0.0160.411.840.0190.00213.6823.280.030.04410570380℃:110用于不锈钢与其它钢的异种钢焊接和复合钢过渡层焊接TGS-309MoLER309LMo0.0160.431.760.0160.00513.5423.352.190.0544059036用于不锈钢与其它钢的异种钢焊接和复合钢过渡层焊接TGS-316LER316L0.0140.411.740.0230.00212.2919.222.190.1139055043-196℃:49用于焊接18%Cr-12%Ni-2%Mo不锈钢TGS-347ER3470.050.432.290.0200.0039.8519.510.060.070.66460630400℃:88用于焊接25%Cr-22%Ni-2%Mo尿素类设备用不锈钢)