The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 1983
Filed:
Jan. 06, 1982
Applicant:
Inventors:
Tomio Takagi, Osaka, JP;
Jitsuhiko Ueda, Kobe, JP;
Tadaomi Fujii, Nara, JP;
Kazuhiko Tanaka, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
75124 ;
Abstract
A roll material comprising, in proportions by weight, 0.04-0.20% C, 0.2-0.8% Si, 0.4-1.5% Mn, 0.2-1.0% Ni, 10.0-14.0% Cr, 0.5-4% Cu, 0.1-0.5% V, 0.01-0.35% Nb, 0.01-0.06% Al, P and S each in a reduced amount of up to 0.03% as impurity elements, and the balance Fe. The material is comparable in resistance to high-temperature oxidation in 13Cr martensitic stainless steels which are presently used and yet has outstanding strength at high temperatures.