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.

Date of Patent:
Aug. 09, 2022

Filed:

Aug. 20, 2018
Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Hiromi Yoshitomi, Tokyo, JP;

Yasuaki Okita, Tokyo, JP;

Masaki Koba, Tokyo, JP;

Yoshihiko Ono, Tokyo, JP;

Hiroshi Matsuda, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/04 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/20 (2006.01); C22C 38/60 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C23G 1/00 (2006.01); C23C 2/06 (2006.01); C23C 2/12 (2006.01); C23C 2/02 (2006.01); C22C 38/38 (2006.01); C23C 2/40 (2006.01); C23C 2/28 (2006.01); C21D 9/56 (2006.01); C21D 1/76 (2006.01); C22C 18/02 (2006.01); C22C 38/22 (2006.01); C22C 38/26 (2006.01); C22C 38/40 (2006.01); C22C 38/44 (2006.01); C22C 38/18 (2006.01); C22C 38/46 (2006.01); C22C 38/24 (2006.01); C22C 38/54 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/50 (2006.01); C22C 38/48 (2006.01); C22C 38/42 (2006.01); C23C 2/04 (2006.01); B32B 15/01 (2006.01); C23C 30/00 (2006.01); C21D 9/573 (2006.01); B32B 15/18 (2006.01); C23C 2/26 (2006.01); B32B 15/04 (2006.01);
U.S. Cl.
CPC ...
C22C 38/04 (2013.01); B32B 15/01 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C21D 1/76 (2013.01); C21D 8/0221 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 8/0242 (2013.01); C21D 8/0247 (2013.01); C21D 8/0263 (2013.01); C21D 8/0273 (2013.01); C21D 9/46 (2013.01); C21D 9/561 (2013.01); C21D 9/562 (2013.01); C21D 9/573 (2013.01); C21D 9/5735 (2013.01); C22C 18/02 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/18 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C22C 38/40 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/60 (2013.01); C23C 2/02 (2013.01); C23C 2/04 (2013.01); C23C 2/06 (2013.01); C23C 2/12 (2013.01); C23C 2/26 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); C23G 1/00 (2013.01); C21D 2211/001 (2013.01); C21D 2211/002 (2013.01); C21D 2211/005 (2013.01); C21D 2211/008 (2013.01); Y10T 428/12799 (2015.01); Y10T 428/12951 (2015.01); Y10T 428/12958 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/26 (2015.01); Y10T 428/263 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01); Y10T 428/27 (2015.01);
Abstract

A high-strength galvanized steel sheet includes a steel sheet having a steel composition having a specific component composition, a steel structure containing martensite and bainite at more than or equal to 70% (including 100%), ferrite at less than 20% (including 0%), and retained austenite at less than 5% (including 0%) in terms of area ratio, the amount of diffusible hydrogen in steel being less than or equal to 0.20 mass ppm; and a galvanizing layer provided on a surface of the steel sheet, having a content amount of Fe of 8 to 15% in mass %, and having an coating weight per one surface of 20 to 120 g/m, wherein the amount of Mn oxides contained in the galvanizing layer is less than or equal to 0.050 g/m, and a tensile strength is more than or equal to 1100 MPa and a yield ratio is more than or equal to 0.85.


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