Metal treatment – Stock – Titanium – zirconium – or hafnium base
Reexamination Certificate
2005-07-19
2005-07-19
Sheehan, John P. (Department: 1742)
Metal treatment
Stock
Titanium, zirconium, or hafnium base
C420S417000, C420S418000, C420S419000, C420S420000, C420S421000
Reexamination Certificate
active
06918971
ABSTRACT:
A sheet, a plate, a bar or wire is made of Ti and has high ductility and low material anistropy in a plane of a sheet or plate, or in a sectional plane of a bar or a wire and contains Fe, in mass, at 0.15-0.5%, N at 0.015-0.041 and 0, with the balance Ti and unavoidable impurities. When the Fe content is defined as [Fe], the N content as [N] and the 0 content as [0], the oxygen equivalent valuein-line-formulae description="In-line Formulae" end="lead"?Q=[0]+2.77[N]+0.1 [Fe]is 0.11-0.28.in-line-formulae description="In-line Formulae" end="tail"?
REFERENCES:
patent: 6063211 (2000-05-01), Soeda et al.
patent: 1-252747 (1989-10-01), None
patent: 7-268516 (1995-10-01), None
patent: 2002-180166 (2002-06-01), None
patent: 2002-294372 (2002-10-01), None
Fujii Hideki
Ishii Mitsuo
Takahashi Kazuhiro
Takayama Isamu
Yamashita Yoshito
Kenyon & Kenyon
Nippon Steel Corporation
Sheehan John P.
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