SQA308-T产品型号GBAWSJISR308T1-GR308T1-G典型熔敷金属化学成分(%)CSiMnCrNiMoVALSP其它0.0460.461.3119.5810.230.0180.019典型熔敷金属力学性能Rm(Mpa)ReH(Mpa)A5(%)Akv(J)55645特征和用途单面焊双面成型TIG焊丝，背面不充***气，用于SUS304不锈钢管的打底焊接。船级社认可极性保护气体Ar)