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. 24, 2019
Filed:
Mar. 14, 2014
Nippon Steel & Sumikin Stainless Steel Corporation, Tokyo, JP;
Ken Kimura, Kimitsu, JP;
Junichi Hamada, Hikari, JP;
Eiichiro Ishimaru, Hikari, JP;
Akihito Yamagishi, Kashima, JP;
Naoto Hansaki, Kashima, JP;
Abstract
A ferritic stainless steel sheet containing, by mass %, C: 0.020% or less, Cr: 10.0% to 25.0%, N: 0.020% or less, Sn: 0.010% to 0.50%, and one or more of Ti: 0.60% or less, Nb: 0.60% or less, V: 0.60% or less, and Zr: 0.60% or less so as to satisfy Equation (1): (Ti/48+V/51+Zr/91+Nb/93)/(C/12+N/14)≥1.0, wherein a difference between a stress σ1 (N/mm) after prestrain imparting tensile deformation with 7.5% of strain, and an upper yield stress σ2 (N/mm) when the steel sheet is subjected to heat treatment at 200° C. for 30 minutes and then to tension again after the tensile deformation is 8 or less.