Flux-cored wire

Provided is a flux-cored wire for gas-shielded arc welding, with which it is possible to obtain a weld metal having excellent strength and toughness even when the PWHT temperature is high, and with which welding workability is good. A flux-cored wire for gas-shielded arc welding in which a flux is filled in a steel sheath, the flux-cored wire having Fe, C, Mn, Cr, Ni, Mo, Nb, V, P, and S contents controlled within predetermined ranges, and containing, with respect to the total mass of the wire, 3.0-9.0 mass% of TiO2, 0.5-1.5 mass% of Si and Si compounds in terms of SiO2, 0.10-1.50 mass% of Co, and the balance of Fe and unavoidable impurities. And 0.015-0.060 mass% of N, and satisfies the following conditions: 0.11 mass% or less of Li, 0.85 mass% or less of Mg, and 0.3 mass% or less of the total amount of K and Na. 提供一种气体保护电弧焊用的药芯焊丝，即使PWHT温度为高温，其也能够得到强度和韧性优异的焊接金属，并且焊接操作性良好。一种在钢制外皮中填充有焊剂的气体保护电弧焊用的药芯焊丝，其中，Fe、C、Mn、Cr、Ni、Mo、Nb、V、P和S的含量控制在规定范围，并且相对于焊丝总质量，含有TiO2：3.0质量％以上且9.0质量％以下，金属Si和Si化合物的SiO2换算值：0.5质量％以上且1.5质量％以下