Kawasaki Steel Corporation

Osamu Tanigawa

Takahiro Kubo

Chiaki Shiga

Yoshifumi Nakano

There is provided a low-temperature service nickel steel plate with excellent weld toughness. This steel plate consists essentially of not less than 0.03% of C, 0.02 to 0.22% of Si, 0.05 to 0.47% of Mn, not more than 0.005% of P, not more than 0.005% of S, 7.5 to 12.0% of Ni, 0.01 to 0.10% of Al, and the remaining of Fe, where the following relations stand 3.5%.ltoreq.(8Si+9Mn).ltoreq.5.1% and 123C+(8Si+9Mn).ltoreq.10.9%.

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Okayama, Japan

Osamu Tanigawa