不锈钢焊丝品名类别AWS型号典型化学成分，%特点和用途CMnSiCrNiMo不锈钢焊丝Techalloy2209ER22090.0161.40.4522.48.53.2双相不锈钢焊接Techalloy308LER308L0.0191.720.4620.810.1Techalloy309LER309L0.0211.750.5123.412.7Techalloy310ER3100.111.900.4027.121.025/20合金Techalloy316LER316L0.0161.870.4819.313.22.25Techalloy347ER3470.041.650.5219.99.75321,347不锈钢焊接Techalloy410ER4100.110.450.3912.5Techalloy410NiMoER410NiMo0.020.450.411.84.50.55耐气蚀部件焊接)