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:
Feb. 26, 2013
Filed:
Jan. 07, 2008
Kunio Fukuda, Tokyo, JP;
Yoshimasa Funakawa, Tokyo, JP;
Shuji Okada, Tokyo, JP;
Toshihiro Kasamo, Tokyo, JP;
Katsuhiro Kobori, Tokyo, JP;
Takumi Ujiro, Tokyo, JP;
Tomohiro Ishii, Tokyo, JP;
Kunio Fukuda, Tokyo, JP;
Yoshimasa Funakawa, Tokyo, JP;
Shuji Okada, Tokyo, JP;
Toshihiro Kasamo, Tokyo, JP;
Katsuhiro Kobori, Tokyo, JP;
Takumi Ujiro, Tokyo, JP;
Tomohiro Ishii, Tokyo, JP;
JFE Steel Corporation, , JP;
Abstract
A ferritic stainless steel sheet for a water heater with excellent corrosion resistance of welds and toughness includes, in terms of mass %, 0.020% or less of C, 0.30 to 1.00% of Si, 1.00% or less of Mn, 0.040% or less of P, 0.010% or less of S, 20.0 to 28.0% of Cr, 0.6% or less of Ni, 0.03 to 0.15% of Al, 0.020% or less of N, 0.0020 to 0.0150% of O, 0.3 to 1.5% of Mo, 0.25 to 0.60% of Nb, and 0.05% or less of Ti, the remainder being composed of Fe and unavoidable impurities, and the ferritic stainless steel sheet satisfying the following formulae (1) and (2):25≦Cr+3.3Mo≦30  (1)0.35≦Si+Al≦0.85  (2)wherein Cr, Mo, Si, and Al represent the content (mass %) of Cr, Mo, Si, and Al, respectively.