Oblon, McClelland, Maier & Neustadt, L.L.P.
Steel sheet having excellent weldability
Disclosed is a steel sheet, containing: Si: 0.20-2% (the term “%” herein means “mass %”, the same is true hereinbelow), Mn: 1-2.5%, a total mass of Si and Mn being 1.5% or more, and O: 0.002% or less (exclusive of 0%), C: 0.02-0.25%, P: 0.1% or less (exclusive of 0%), S: 0.05% or less (exclusive of 0%), Al—0.02-0.2%, and N: 0.0015-0.015%. The steel sheet of the invention can be advantageously used for forming wide beads even in high-speed arc welding of 100 cm/min or higher.
Kobe Steel, Ltd.
C C B C C C Y B C C B
C21C C21D B23K C22C C21D C21D Y10T B23K C22C C22C B23K
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Reiichi Tetsuo Kei
Suzuki Soshiroda Yamazaki