Flux-cored wire, welding method using flux-cored wire, method for manufacturing weld joint using flux-cored wire, and weld joint

摘要

In a flux-cored wire according to the present invention, CaF₂ and the like are included and a total amount thereof α is 3.3 to 6.0% in terms of mass % with respect to a total mass, Ti oxide and the like are included and a total amount thereof β is 0.4 to 1.2% in terms of mass % with respect to the total mass, CaCO₃ and the like are included and a total amount thereof is 0.1 to 0.5% in terms of mass % with respect to the total mass, and an amount of an iron powder in the flux is less than 10% in terms of mass % with respect to the total mass.