Metal treatment – Stock – Titanium – zirconium – or hafnium base
Reexamination Certificate
2007-08-28
2007-08-28
Sheehan, John P. (Department: 1742)
Metal treatment
Stock
Titanium, zirconium, or hafnium base
C148S670000, C148S671000, C420S417000, C420S418000, C420S419000, C420S420000, C420S421000, C420S422000
Reexamination Certificate
active
10450530
ABSTRACT:
A titanium alloy obtained by a cold-working step, in which 10% or more of cold working is applied to a raw titanium alloy, comprising a Va group element and the balance of titanium substantially, and an aging treatment step, in which a cold-worked member, obtained after the cold-working step, is subjected to an aging treatment so that the parameter “P” falls in a range of from 8.0 to 18.5 at a treatment temperature falling in a range of from 150° C. to 600° C.; and characterized in that its tensile elastic limit strength is 950 MPa or more and its elastic deformation capability is 1.6% or more. This titanium alloy is of high elastic deformation capability as well as high tensile elastic limit strength, and can be utilized in a variety of products extensively.
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Furuta Tadahiko
Hwang Jung-Hwan
Nishino Kazuaki
Saito Takashi
Kabushiki Kaisha Toyota Chuo Kenkyusho
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sheehan John P.
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