Gas shield arc welding wire and gas shield arc welding method

摘要

Provided is a gas shielded arc welding wire and a gas shielded arc welding method that enables automation of welding (continuous automatic welding) by suppressing welding defects such as poor fusion or bead shape, even with a high-Cr welding material. In mass% per mass of wire, C: 0.01 to 0.50%, Si: 0.01 to 1.50%, Mn: 0.10 to 2.50%, Cr: 5 to 15%, Ni: 0.05 to 1.50%, Mo: 0.1 to 2.0%, V: 0.1 to 1.0%, Nb: 0.01 to 0.20%, REM: 0.001 to 0.050%, S: 0.0010 to 0.0200%, O: 0.025% or less (including 0%), and the following formula (1) Gas shielded arc welding wire, characterized in that it satisfies. 3.0≤(Nb+10×REM)/(S+O)≤200.0...(1)