Gas protection welding wire for low-magnetic steel

The invention discloses a gas protection welding wire for low-magnetic steel, and belongs to the field of welding materials. The welding wire comprises components including, by mass percent, 0.15% to 0.35% of C, 4% to 10% of Mn, 0.30% to 1.0% of Si, 13% to 20% of Ni, 3% to 7% of Mo, 0.1% to 0.4% of Ti, 10% to 26% of Cr, smaller than 0.005% of S, smaller than 0.015% of P and the balance Fe. When the disclosed welding wire is used for argon tungsten-arc welding or metal inert gas protection welding of the low-magnetic steel, an obtained welding line has the good mechanical property, the low magnetic conductivity can be ensured, and the welding wire is particularly suitable for welding of working welding lines, with the requirement for the service environment without magnetism or with the low magnetism, of manganese aluminum low magnetic steel. 本发明公开种低磁钢用气保护焊丝，属于焊接材料领域。本发明的各个组分按质量百分比表示，分别为：C：0.15％-0.35％；Mn：4％-10％；Si：0.30％-1.0％；Ni：13％-20％；Mo：3％-7％；Ti：0.1％-0.4％；Cr：10％-26％；S：