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:
Nov. 24, 2020
Filed:
Aug. 16, 2016
Nippon Steel Chemical & Material Co., Ltd., Tokyo, JP;
Hiroto Unno, Tokyo, JP;
Naoya Sawaki, Tokyo, JP;
Naoki Fujimoto, Tokyo, JP;
Masahiro Fukuda, Tokyo, JP;
Tomohiro Uno, Tokyo, JP;
Toru Inaguma, Tokyo, JP;
NIPPON STEEL CHEMICAL & MATERIAL CO., LTD., Tokyo, JP;
Abstract
The present invention provides a ferritic stainless steel foil high in stretch-expand formability and further small in anisotropy of deformation with respect to stretch-expand forming even with ultrathin steel foil with a thickness of 60 μm or less. The ferritic stainless steel foil has a thickness of 5 μm to 60 μm, wherein a recrystallization rate of the stainless steel foil is 90% to 100%, and in an orientation distribution function obtained by analysis of a crystalline texture of the stainless steel foil, when a Euler angle φ2 is 45°±10°, at a plane expressed by a Euler angle Φ of 53.4°±10°, a maximum peak strength ratio in peak strength ratios shown by orientations corresponding to a Euler angle φ1 is 25 or less, where the Euler angle φ1 is 0 to 90°. The ferritic stainless steel foil may be laminated with a resin film and is useful for producing a battery case.