Solid wire for gas shielded arc welding, gas shielded arc welding metal, welded joint, welded member, welding method, and method of manufacturing welded joint

摘要

In mass% with respect to the total mass of the wire including plating, C: 0.03 to 0.15%, Si: 0.2 to 0.5%, Mn: 0.3 to 0.8%, P: 0.02 % Or less, S: 0.02% or less, Al: 0.1 to 0.3%, Ti: 0.001 to 0.2%, Cu: 0 to 0.5%, Cr: 0 to 2.5% Nb: 0 to 1.0%, V: 0 to 1.0%, with the balance being Fe and impurities, and the value of X below is in the range of 1.5 to 3.5% by mass It is a solid wire for gas shielded arc welding. Moreover, as a weld metal, the value of X of a following formula is a weld metal which exists in the range of 1.0-4.0%. Further, the present invention relates to a welded joint, welded member, welding method, and welded joint manufacturing method using these solid wires or weld metal. X = 2 × [Si] + [Mn] + 3 × [Ti] + 5 × [Al]