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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.:

US 12247293 B1

PDFFull Text
Date of Patent:
Mar. 11, 2025

Filed:

Aug. 19, 2021

Hot-dip zn-based plated steel sheet

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Takuya Mitsunobu, Tokyo, JP;

Makoto Akahoshi, Tokyo, JP;

Hiroshi Takebayashi, Tokyo, JP;

Takehiro Takahashi, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Renner, Otto, Boisselle & Sklar, LLP

Primary Examiner:

Adam Krupicka

Int. Cl.
CPC ...
C23C 2/06 (2006.01); B32B 15/01 (2006.01); C21D 1/74 (2006.01); C21D 1/84 (2006.01); C21D 6/00 (2006.01); C21D 9/46 (2006.01); C22C 18/04 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22F 1/02 (2006.01); C22F 1/16 (2006.01); C23C 2/28 (2006.01);
U.S. Cl.
CPC ...
C23C 2/06 (2013.01); B32B 15/013 (2013.01); C21D 1/74 (2013.01); C21D 1/84 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 9/46 (2013.01); C22C 18/04 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22F 1/02 (2013.01); C22F 1/165 (2013.01); C23C 2/29 (2022.08);
Abstract

This hot-dip Zn-based plated steel sheet includes a steel sheet and a plating layer formed on at least part of a surface of the steel sheet, in which the plating layer has a chemical composition that includes, by mass %, Al: 6.00% to 35.00%, Mg: 2.00% to 12.00%, Ca: 0.005% to 2.00%, Si: 0% to 2.00%, Fe: 0% to 2.00%, Sb: 0% to 0.50%, Sr: 0% to 0.50%, Pb: 0% to 0.50%, Sn; 0% to 1.00%, Cu: 0% to 1.00%, Ti: 0% to 1.00%, Ni: 0% to 1.00%, Mn: 0% to 1.00%, Cr: 0% to 1.00%, and a remainder: Zn and impurities; the plating layer has an area ratio of a MgZnphase in a range of 15% to 60% in a cross section in a thickness direction, and the MgZnphase includes a Ca-based intermetallic compound having a circle equivalent diameter of 0.10 μm or smaller.

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