SQJ551-CrNiCu产品型号GBAWSJISE550T1-WE80T1-WYFA-58W典型熔敷金属化学成分(%)CSiMnCrNiMoVALSP其它0.040.270.970.060.430.0100.015Cu：0.40典型熔敷金属力学性能Rm(Mpa)ReH(Mpa)A5(%)Akv(J)60053825128(-30℃)特征和用途适用于500～590Mp***耐大气腐蚀钢的焊接。船级社认可极性保护气体co2)