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Plated Steel Sheet

Abstract: The present invention provides a plated steel sheet which is characterized by comprising a base steel sheet and a plating layer that is formed on the surface of the base steel sheet, and which is also characterized in that: the plating layer has a specific chemical composition; the depth, in the sheet thickness direction from the interface between the base steel sheet and the plating layer, where the area fraction of pearlite is 0% to 20% is 3 µm to 100 µm; the area fraction of pearlite having a circle-equivalent diameter of 5 µm or more is 0% to 30% at the depth where the area fraction of pearlite is 0% to 20%; the adhesion amount of the plating layer is 20 g/m2 or more per surface; the plating layer has an oxide layer in the surface; and if the oxide layer is measured by XPS, the peak intensity ratio of (Al-O + Mg-O)/Zn-O is 3 or more.

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Patent Information

Application #
Filing Date
27 May 2025
Publication Number
24/2025
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application

Applicants

NIPPON STEEL CORPORATION
6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. MITSUNOBU, Takuya
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
2. HAYASHIDA, Shota
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
3. TAKEBAYASHI, Hiroshi
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

# Name Date
1 202517050791-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [27-05-2025(online)].pdf 2025-05-27
2 202517050791-STATEMENT OF UNDERTAKING (FORM 3) [27-05-2025(online)].pdf 2025-05-27
3 202517050791-REQUEST FOR EXAMINATION (FORM-18) [27-05-2025(online)].pdf 2025-05-27
4 202517050791-PROOF OF RIGHT [27-05-2025(online)].pdf 2025-05-27
5 202517050791-PRIORITY DOCUMENTS [27-05-2025(online)].pdf 2025-05-27
6 202517050791-POWER OF AUTHORITY [27-05-2025(online)].pdf 2025-05-27
7 202517050791-FORM 18 [27-05-2025(online)].pdf 2025-05-27
8 202517050791-FORM 1 [27-05-2025(online)].pdf 2025-05-27
9 202517050791-DECLARATION OF INVENTORSHIP (FORM 5) [27-05-2025(online)].pdf 2025-05-27
10 202517050791-COMPLETE SPECIFICATION [27-05-2025(online)].pdf 2025-05-27
11 202517050791-MARKED COPIES OF AMENDEMENTS [04-06-2025(online)].pdf 2025-06-04
12 202517050791-FORM 13 [04-06-2025(online)].pdf 2025-06-04
13 202517050791-AMMENDED DOCUMENTS [04-06-2025(online)].pdf 2025-06-04
14 202517050791-FORM 3 [22-09-2025(online)].pdf 2025-09-22