Uniformity of bead width and the high anti-corrosive austenite type rustless steel and the welding consumable null which are superior in the reverse side bead

摘要

PROBLEM TO BE SOLVED: To obtain a welded joint contg. perfect back beads, furthermore uniform in the width of beads and having excellent strength and corrosion resistance by specifying the components in a stainless steel and moreover allowing O in impurities to satisfy the specified inequality. ;SOLUTION: This steel has components contg., by weight, ≤0.025% C, 0.05 to 1.5% Si, 0.05 to 4% Mn, 15 to 27% Cr, 8 to 23% Ni, ≤0.01% Al, 0 to 3.2% Mo, and the balance Fe with inevitable impurities. The contents of P and S are both regulated to ≤0.04%, and oxygen in the impurities satisfies the inequality I. The material can be produced by an ordinary method for industrially producing a stainless steel. Refining is executed by a melting method by an arc type electric furnace or the like. Thus, a welded joint contg. perfect back beads, furthermore uniform in the width of beads and having excellent strength and corrosion resistance can be obtd.;COPYRIGHT: (C)1997,JPO