Nippon Steel Corporation

Toho Titanium Co., Ltd.

Takuji Shindo

Hiromitsu Naito

Makoto Takeuchi

Shinichi Teraoka

Masanori Ueda

Toshiyuki Suehiro

Shuichi Inoue

Nobuo Fukada

Masaaki Koizumi

Takashi Fukuyama

Masayoshi Kondo

Austenitic stainless steel sheet having excellent surface quality and

A high strength titanium material having an improved ductility, contains 0.1 to 0.8% by weight of iron, a required oxygen and nitrogen satisfying the following expression, in which an oxygen equivalence Q ranges from 0.35 to 1.0,

High strength titanium material having improved ductility

A method for producing a titanium strip having a small proof strength anisotropy and an improved ductility comprises the steps of: reheating a hot rolled titanium strip containing 0.1% by weight or less of oxygen and 0.1 to 0.5% by weight of iron at a .beta. region temperature and cooling by water, aging the obtained titanium strip at a temperature of 200.degree. to 500.degree. C. for 30 minutes or more, cold rolling the titanium strip at a rolling reduction of 30% or more; and, annealing the cold rolled titanium strip at a temperature of 600.degree. to 800.degree. C.

Method for producing titanium strip having small proof strength

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Futtsu, Japan

Takuji Shindo