Nippon Steel Corporation

Isamu Kimoto

Hiroshi Tamehiro

Yoshio Terada

Hiroyuki Ogawa

Rikio Chijiiwa

Koichi Shinada

Yoshinori Ogata

Hajime Ishikawa

A wire for gas metal arc welding containing 0.01 to 0.06 wt % of C, 0.10 to 0.60 wt % of Si, 0.9 to 3.1 wt % of Mn, 0.7 to 2.0 wt % of Cr, 0.005 to 0.06% of Ti, not greater than 0.08 wt % of Al and if necessary, 0.05 to 0.30 wt % of Cu, and the balance of Fe and unavoidable impurities. This wire improves the selective corrosion resistance and the low temperature toughness of the resulting weld metal, and is particularly suitable for circumferential welding of line pipes for transporting CO.sub.2 -containing petroleum, natural gases or CO.sub.2.

Line pipe metal arc welded with wire alloy

Growing community of inventors

Futtsu, Japan

Isamu Kimoto