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:
Jul. 17, 2018
Filed:
Jan. 30, 2015
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Minoru Tanaka, Fukuyama, JP;
Yoshitsugu Suzuki, Chiba, JP;
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/02 (2006.01); C22C 38/04 (2006.01); B32B 15/00 (2006.01); C21D 9/46 (2006.01); C22C 38/58 (2006.01); C22C 38/54 (2006.01); C22C 38/50 (2006.01); C22C 38/48 (2006.01); C22C 38/44 (2006.01); C22C 38/42 (2006.01); C22C 38/38 (2006.01); C22C 38/34 (2006.01); C22C 38/32 (2006.01); C22C 38/28 (2006.01); C22C 38/26 (2006.01); C22C 38/22 (2006.01); C22C 38/20 (2006.01); C22C 38/06 (2006.01); C22C 38/00 (2006.01); C21D 8/02 (2006.01); C23C 2/06 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 8/0263 (2013.01); C21D 8/0278 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/34 (2013.01); C22C 38/38 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C23C 2/06 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01);
Abstract
A galvannealed steel sheet having a galvanized layer on a surface thereof is provided, having a composition which contains C: 0.10% to 0.35%, Si: 0.3% to 3.0%, Mn: 0.5% to 3.0%, P: 0.001% to 0.10%, Al: 0.01% to 3.00%, and S: 0.200% or less on a mass basis, the remainder being Fe and incidental impurities. The steel sheet has a SiC/SiOratio of more than 0.20, the SiC/SiOratio being a ratio of SiC amount to SiOamount at a depth of 1 μm or less in the steel sheet from an interface between the steel sheet and the galvanized layer, and Fe in the galvanized layer constitutes 8% to 13% by mass.