A flux-cored wire for Ar-CO 2 mixed gas shielded arc welding obtained by filling a flux into a steel outer skin, consisting of: in terms of % by mass with respect to a total mass of the wire, as a total in the steel outer skin and the flux, 0.03 to 0.08% of C; 0.1 to 0.6% of Si; 1.2 to 2.5% of Mn; 0.01 to 0.5% of Cu; 0.5 to 1.5% of Ni; 0.05 to 0.5% of Ti; 0.002 to 0.015% of B; and 0.05% or less of Al, and further consisting of: in terms of % by mass with respect to the total mass of the wire, in the flux, 4 to 8% of a Ti oxide in terms of TiO 2 in total; 0.1 to 0.6% of a Si oxide in terms of SiO 2 in total; 0.02 to 0.3% of an Al oxide in terms of Al 2 O 3 in total; 0.1 to 0.8% of Mg; 0.05 to 0.3% of a fluorine compound in terms of F in total; 0.05 to 0.3% of one kind or two kinds of Na and K in the fluorine compound in terms of Na and K in total; 0.05 to 0.2% of one kind or two kinds of Na 2 O and K 2 O in total; and 0.2% or less of a Zr oxide in terms of ZrO 2 in total, the balance being Fe in the steel outer skin, iron powder, a Fe component of iron alloy powder, and inevitable impurities. in terms of % by mass with respect to a total mass of the wire, as a total in the steel outer skin and the flux, 0.03 to 0.08% of C; 0.1 to 0.6% of Si; 1.2 to 2.5% of Mn; 0.01 to 0.5% of Cu; 0.5 to 1.5% of Ni; 0.05 to 0.5% of Ti; 0.002 to 0.015% of B; and 0.05% or less of Al, 0.03 to 0.08% of C; 0.1 to 0.6% of Si; 1.2 to 2.5% of Mn; 0.01 to 0.5% of Cu; 0.5 to 1.5% of Ni; 0.05 to 0.5% of Ti; 0.002 to 0.015% of B; and 0.05% or less of Al, and further consisting of: in terms of % by mass with respect to the total mass of the wire, in the flux, 4 to 8% of a Ti oxide in terms of TiO 2 in total; 0.1 to 0.6% of a Si oxide in terms of SiO 2 in total; 0.02 to 0.3% of an Al oxide in terms of Al 2 O 3 in total; 0.1 to 0.8% of Mg; 0.05 to 0.3% of a fluorine compound in terms of F in total; 0.05 to 0.3% of one kind or two kinds of Na and K in the fluorine compound in terms of Na and K in total; 0.05 to 0.2% of one kind or two kinds of Na 2 O and K 2 O in total; and 0.2% or less of a Zr oxide in terms of ZrO 2 in total, in terms of % by mass with respect to the total mass of the wire, in the flux, 4 to 8% of a Ti oxide in terms of TiO 2 in total; 0.1 to 0.6% of a Si oxide in terms of SiO 2 in total; 0.02 to 0.3% of an Al oxide in terms of Al 2 O 3 in total; 0.1 to 0.8% of Mg; 0.05 to 0.3% of a fluorine compound in terms of F in total; 0.05 to 0.3% of one kind or two kinds of Na and K in the fluorine compound in terms of Na and K in total; 0.05 to 0.2% of one kind or two kinds of Na 2 O and K 2 O in total; and 0.2% or less of a Zr oxide in terms of ZrO 2 in total, 4 to 8% of a Ti oxide in terms of TiO 2 in total; 0.1 to 0.6% of a Si oxide in terms of SiO 2 in total; 0.02 to 0.3% of an Al oxide in terms of Al 2 O 3 in total; 0.1 to 0.8% of Mg; 0.05 to 0.3% of a fluorine compound in terms of F in total; 0.05 to 0.3% of one kind or two kinds of Na and K in the fluorine compound in terms of Na and K in total; 0.05 to 0.2% of one kind or two kinds of Na 2 O and K 2 O in total; and 0.2% or less of a Zr oxide in terms of ZrO 2 in total, the balance being Fe in the steel outer skin, iron powder, a Fe component of iron alloy powder, and inevitable impurities.