460MPa gas protection welding wire for anti-shock anti-corrosion fireproof construction structural steel

The invent discloses a 460MPa gas protection welding wire for anti-shock anti-corrosion fireproof construction structural steel, and belongs to the technical field of welding materials. The 460MPa gasprotection welding wire comprises the chemical elements of, by mass, 0.02-0.14% of C, 0.41-1.00% of Si, 0.10-0.90% of Cr, 0.10-3.0% of Ni, 0-0.70% of Cu, 0.50-1.80% of Mn, 0.20-0.59% of Mo, 0-0.12% of Ti, 0-0.08% of V, 0-0.08% of Mg and the balance Fe and inevitable impurities. According to formed weld metal, the yield strength is 410-590 MPa, the tensile strength is 450-620 MPa, the ductility Ais 21-26%, and the contraction ratio of the cross section is 60-71%; and the high-temperature yield strength of the weld metal is 320-438 MPa, and the weld metal has the high low-temperature impact toughness. 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