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:
May. 28, 1991
Filed:
Apr. 03, 1990
Applicant:
Inventors:
Teruo Yoshimoto, Suita, JP;
Makoto Takahashi, Hirakata, JP;
Assignee:
Kubota Corporation, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ;
U.S. Cl.
CPC ...
420 51 ; 420 54 ; 420 55 ; 420 62 ; 420103 ; 420447 ; 420449 ; 4205841 ;
Abstract
A heat-resistant alloy comprising, in % by weight, 0.3-0.8% of C, 0.5-3% of Si, over 0% to not greater than 2% of Mn, at least 23% to less than 30% of Cr, 40-55% of Ni, 0.2-1.8% of Nb, over 0.08% to not greater than 0.2% of N, 0.01-0.5% of Ti and/or 0.01-0.5% of Zr, and the balance Fe and inevitable impurities. The alloy is usable at high temperatures exceeding 1100.degree. C. with high creep rupture strength and excellent resistance to oxidation and to carburization, further exhibiting high creep deformation resistance at high temperatures and high ductility after aging.