Title:
PLATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2023/248987
Kind Code:
A1
Abstract:
This plated steel sheet comprises a steel sheet and a plating layer disposed over a surface of the steel sheet. The chemical composition of the plating layer contains, in mass%, 10.0-30.0% Al, 3.0-15.0% Mg, 0.01-2.0% Fe, greater than 0 to 2.0% Si, and 0.05-2.0% Ca, as well as one or two elements selected from the group consisting of group A and group B, with the remainder being Zn and impurities. The number density of Ca-Zn phases with an equivalent circle diameter of 1 μm or greater exposed on the surface of the plating layer is 0-10 per 10,000 μm2 area, and the number density of Al-Si-Zn-Ca phases with an equivalent circle diameter of 1 μm or greater exposed on the surface of the plating layer is 1-50 per 10,000 μm2 area.
Inventors:
MITSUNOBU TAKUYA (JP)
URANAKA MASAAKI (JP)
TOKUDA KOHEI (JP)
URANAKA MASAAKI (JP)
TOKUDA KOHEI (JP)
Application Number:
PCT/JP2023/022632
Publication Date:
December 28, 2023
Filing Date:
June 19, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C2/06; C22C18/04; C23C2/26; C23C2/40
Domestic Patent References:
| WO2021171514A1 | 2021-09-02 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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