Title:
PLATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2024/053663
Kind Code:
A1
Abstract:
Provided is a plated steel sheet having high LME resistance. A plated steel sheet according to the present invention is characterized by having a prescribed chemical composition and is characterized in that: when the C-concentration is measured by GDS in the depth direction of a base steel sheet starting from the interface between the base steel sheet and a plating layer, the depth at which the C-concentration is 0.05% or less is 10 μm or more; the thickness of a layer where the area percentage of a ferrite phase is 90% or more is at least 20 μm in the depth direction from the surface of the base steel sheet; and the roughness expressed as Ra of the interface between the base steel sheet and the plating layer is 3.0 μm or less.
Inventors:
MITSUNOBU TAKUYA (JP)
YOKOYAMA TAKAFUMI (JP)
TAKEBAYASHI HIROSHI (JP)
YOKOYAMA TAKAFUMI (JP)
TAKEBAYASHI HIROSHI (JP)
Application Number:
PCT/JP2023/032483
Publication Date:
March 14, 2024
Filing Date:
September 06, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D3/04; C21D9/46; C22C18/00; C22C18/04; C22C38/00; C22C38/58; C23C2/06
Domestic Patent References:
| WO2022149511A1 | 2022-07-14 | |||
| WO2022149507A1 | 2022-07-14 | |||
| WO2022149505A1 | 2022-07-14 | |||
| WO2022097738A1 | 2022-05-12 | |||
| WO2020130631A1 | 2020-06-25 |
Foreign References:
| KR20220019867A | 2022-02-18 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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