奥地利伯乐T-90SB3焊丝品名类型AWS型号焊道金属化学成分的化验值焊道金属机械性能的化验值主要用途CSiMnCrNi降伏强度抗拉强度延伸率冲击值TIG焊丝T-80SB2ER80S-B20.100.430.441.270.435005902680用于焊接1.25Cr-0.5%Mo耐热钢T-90SB3ER90S-B30.100.400.422.330.4355067026180用于焊接2.25Cr-1%Mo耐热钢)