一种抗震耐蚀耐火建筑结构钢用460MPa级气体保护焊丝 ,属于焊接材料技术领域。化学元素质量百分比含量为：C：0 .02-0 .14％，Si：0 .41-1 .00％，Cr：0 .10-0 .90％，Ni：0 .10-3 .0％，Cu：0-0 .70％，Mn：0 .50-1 .80％，Mo：0 .20-0 .59％，Ti：0-0 .12％，V：0-0 .08％，Mg：0-0 .08％，余量为Fe及不可避免的杂质。所形成的焊缝金属的屈服强度为410-590MPa，抗拉强度而为450-620MPa，延伸率A为21-26％，断面收缩率为60-71％。焊缝金属高温屈服强度为320-438MPa；并且具有高的低温冲击韧性。

A kind of 460 MPa gas shielded welding wire for anti-seismic, corrosion-resistant and fire-resistant building structural steel belongs to the field of welding material technology. The contents of chemical elements are as follows : C : 0.02-0.14 %, Si : 0.41-1.00 %, Cr : 0.10-0.90 %, Ni : 0.10-3.0 %, Cu : 0.70 %, Mn : 0.50-1.80 %, Mo : 0.20-0.59 %, Ti : 0.12 %, V : 0.08 %, Mg : 0.08 %. The remainder is Fe and inevitable impurity. The yield strength of the formed weld metal is 410 – 590 MPa, the tensile strength is 450 – 620 MPa, the elongation A is 21 – 26 %, and the section shrinkage is 60 – 71 %. The high-temperature yield strength of weld metal is 320 – 438 MPa. And has high low temperature impact toughness.