Flux-cored wire for use in gas-shielded arc welding

Abstract

A flux-cored wire for use in gas shielded arc welding wherein flux of the following composition (weight % with regard to the entire wire) is inserted as a core into a metallic casing and the whole hydrogen content (H) of the wire is defined as 15 ppm .ltoreq.H.ltoreq.139+440F ppm (F: the weight % of fluorine with regard to the entire wire): ______________________________________ Metal fluoride (as fluorine) 0.025-0.35% preferably, 0.025-0.27% Metal carbonate .ltoreq.0.5 One or more selected from Al, Ti, V and Ca .ltoreq.0.75% TiO.sub.2 3.5-7.4% SiO.sub.2 .ltoreq.2.0% MgO and/or ZrO.sub.2 0.03-1.2% Al.sub.2 O.sub.3 .ltoreq.1.5% C .ltoreq.0.15% Mn 1.2-3.0% Si 0.3-1.2%. ______________________________________

Dependencies are inferred from the claim text.