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:
Sep. 01, 2020
Filed:
Sep. 08, 2016
Jfe Steel Corporation, Tokyo, JP;
Tomoyuki Okubo, Tokyo, JP;
Tatsuhiko Hiratani, Tokyo, JP;
Yoshihiko Oda, Tokyo, JP;
Hiroaki Nakajima, Tokyo, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
A high-silicon steel sheet is excellent in terms of punching workability and magnetic property. The high-silicon steel sheet has a chemical composition containing, by mass %, C: 0.02% or less, P: 0.02% or less, Si: 4.5% or more and 7.0% or less, Mn: 0.01% or more and 1.0% or less, Al: 1.0% or less, O: 0.01% or less, N: 0.01% or less, and the balance being Fe and inevitable impurities, a grain-boundary oxygen concentration (oxygen concentration with respect to chemical elements segregated at grain boundaries) of 30 at % or less, and a microstructure in which a degree of integration P(211) of a {211}-plane of α-Fe on a surface of the steel sheet is 15% or more(211)=(211)/×100(%), wherein(110)/100+(200)/14.93+(211)/25.88+(310)/7.68+(222)/1.59+(321)/6.27+(411)/1.55, and