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:
Oct. 13, 2015
Filed:
Oct. 12, 2011
Tetsuyuki Nakamura, Chiba, JP;
Hiroki Ota, Chiba, JP;
Takumi Ujiro, Chiba, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
An object is to provide a ferritic stainless steel having excellent oxidation resistance, while preventing a deterioration in formability, without adding expensive chemical elements such as Mo and W. Specifically, the ferritic stainless steel excellent in oxidation resistance having a chemical composition containing, by mass %, C: 0.015% or less, Si: 0.40% or more and 1.00% or less, Mn: 1.00% or less, P: 0.040% or less, S: 0.010% or less, Cr: 12.0% or more and 23.0% or less, N: 0.015% or less, Nb: 0.30% or more and 0.65% or less, Ti: 0.150% or less, Mo: 0.10% or less, W: 0.10% or less, Cu: less than 1.00%, Al: 0.20% or more and 1.00% or less, while the relationship Si≧Al is satisfied, and the balance being Fe and inevitable impurities.