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. 08, 2026
Filed:
Dec. 19, 2022
Applicant:
Posco Co., Ltd, Pohang-si, KR;
Inventors:
Assignee:
POSCO CO., LTD, Pohang-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/02 (2006.01); C21D 6/00 (2006.01); C21D 8/1216 (2026.01); C21D 8/1244 (2026.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/18 (2006.01); C22C 38/60 (2006.01);
U.S. Cl.
CPC ...
C22C 38/02 (2013.01); C21D 6/008 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1261 (2013.01); C21D 8/1272 (2013.01); C21D 9/46 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); C22C 38/60 (2013.01);
Abstract
A non-oriented electrical steel sheet includes by wt %, Si: 3.0 to 4.0%, Al: 0.1 to 1.5%, Mn: 0.1 to 0.5%, Cr: 2 to 20% of Mn content, a sum of Sn and Sb: 0.006 to 0.1%, C: 0.0010 to 0.0050%, and 0.0003 to 0.0050% of at least one of N, S, Ti, Nb, and V, and balance being Fe and unavoidable impurities, in which an area fraction of a grain having a grain diameter which is 10% or less of a thickness of the steel sheet is 0.5% or more, a number fraction of the grain is 20% or more, and an average grain diameter from a central layer to a surface layer in a thickness direction of the steel sheet satisfies a relationship of D(surface)/D(center)≥0.6.