Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Kinzoku Kabushiki Kaisha

Makoto Yuge

Kensho Sahira

Hisataka Kawai

Ichiro Tsuji

Hiroshi Susukida

Toshiki Takeiri

Toshio Kojima

Hitomi Itoh

A heat resistant nickel base alloy which is excellent in not only hot and cold workability but also high temperature strength properties and which also possesses satisfactory oxidation resistance. The nickel base alloy consists essentially of 0.001-0.15 percent carbon, 0.0005-0.05 percent calcium, 20.0-126.0 percent chromium, 4.7-9.4 percent cobalt, 5.0-16.0 percent molybdenum, 0.5-4.0 percent tungsten, with the total of molybdenum plus tungsten being from 9.0 to 16.5 percent, and the balance nickel and inevitable impurities. The alloy may further contain one selected from the group consisting of (1) 0.3-1.5 percent aluminum and 0.1-1.0 percent titanium, (2) 0.001-0.30 percent at least one of yttrium and rare earth elements, and (3) 0.01-1.0 percent at least one of niobium, vanadium and tantalum, whereby the aforementioned characteristics are further enhanced.

Heat resistant nickel base alloy excellent in workability and high

Growing community of inventors

Ohmiya, Japan

Makoto Yuge