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. 10, 2022
Filed:
Sep. 19, 2017
Nippon Steel Stainless Steel Corporation, Tokyo, JP;
Hideya Kaminaka, Tokyo, JP;
Yoshitaka Nishiyama, Tokyo, JP;
Koichi Nose, Tokyo, JP;
Jun Maki, Tokyo, JP;
Junko Imamura, Tokyo, JP;
Kohei Maejima, Tokyo, JP;
Yuya Takashima, Tokyo, JP;
NIPPON STEEL STAINLESS STEEL CORPORATION, Tokyo, JP;
Abstract
Provided are a stainless steel sheet with good corrosion resistance, low contact resistance and good press workability without the use of expensive materials such as gold or rare metals, and a method of manufacture the same. A method of manufacturing a stainless steel sheet includes: preparing a slab having a chemical composition including, in mass %: 20 to 26% Cr, up to 0.1% N, up to 2.0% Si, etc. (step S); performing hot rolling and cold rolling on the slab to produce a rolled steel sheet with a thickness of 50 to 200 μm (step S); an annealing step in which the rolled steel sheet is annealed and cooled in a gas atmosphere containing nitrogen (step S); and pickling the rolled steel sheet after the annealing step with a solution containing a non-oxidizing acid (step S). The stainless steel sheet has an N content of 0.6 to 2.0% by mass.