Metal treatment – Compositions – Heat treating
Patent
1979-12-18
1981-03-17
Ozaki, G.
Metal treatment
Compositions
Heat treating
75123J, 75123K, 75123N, 75128A, 148 12E, C22C 3700, C22C 3954, C21D 713
Patent
active
042565162
ABSTRACT:
Low nonmagnetic steel having a thermal expansion coefficient of 1.0.about.1.3.times.10.sup.-5 /.degree.C. and a high yielding point of higher than 36 Kg/mm.sup.2 consists of less than 0.5% by weight of C, less than 2% by weight of Si, 20.about.30% by weight of Mn, and 0.005.about.0.04% by weight of N and the balance of iron and impurities, wherein the following relationships between the amounts of C and Mn are simultaneously satisfied.
REFERENCES:
patent: 3678571 (1972-07-01), Schoffmann
patent: 3698889 (1972-10-01), Bungardt et al.
patent: 4043838 (1977-08-01), Devrell
Kohsaka Yohji
Ouchi Chiaki
Nippon Kokan Kabushiki Kaisha
Ozaki G.
Roy Upendra
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