SOLID WIRE FOR GAS-SHIELDED ARC WELDING, GAS-SHIELDED ARC WELDING METAL, WELDING JOINT, WELDING MEMBER, WELDING METHOD, AND METHOD FOR MANUFACTURING WELDING JOINT.

摘要

The present invention comprises a solid wire for gas-shielded arc welding which contains, by mass% relative to the total mass of the wire including plating, C: 0.03-0.15%, Si: 0.2-0.5%, Mn: 0.3-0.8%, P: 0.02% or less, S: 0.02% or less, Al: 0.1-0.3%, Ti: 0.001-0.2%, Cu: 0-0.5%, Cr: 0-2.5%, Nb: 0-1.0%, V: 0-1.0%. The remainder thereof comprises Fe and impurities, and value X of formula (I) is, by mass%, within the range of 1.5-3.5%. Furthermore, the present invention comprises a welding metal wherein value X of formula (I) is within the range of 1.0-4.0%. Furthermore, the present invention comprises a welding joint, a welding member, a welding method, and a method for manufacturing the welding joint which use the solid wire or the welding metal. Formula (I): X=2×[Si]+[Mn]+3×[Ti]+5×[Al].