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Hot Stamp Member

Abstract: This hot stamp member comprises a steel material and a plated layer formed on the steel material, wherein: the plated layer has a predetermined chemical composition; the plated layer contains a Zn-based oxide which is composed of one or two types of oxides among a Zn oxide and a Zn-Mg oxide and has a size of 1.0-10.0 µm in the thickness direction of the plated layer and at least 0.1 µm in a direction perpendicular to the thickness direction; and in the cross section of the plated layer in the thickness direction, when the length of the boundary surface between the plated layer and the steel material is defined as Le, the total length of the Zn-based oxide projected onto the boundary surface from the upper surface of the plated layer is defined as SLi, and the total length of the portion, projected onto the boundary surface from the upper surface of the plated layer, of the Zn-based oxide in contact with the plated layer is defined as SLai, SLi/Le=0.10 and SLai/SLi=0.50 are satisfied.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
22 May 2023
Publication Number
30/2024
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. TAKEBAYASHI Hiroshi
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
3. TAKAHASHI Takehiro
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

# Name Date
1 202317035443.pdf 2023-05-22
2 202317035443-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [22-05-2023(online)].pdf 2023-05-22
3 202317035443-STATEMENT OF UNDERTAKING (FORM 3) [22-05-2023(online)].pdf 2023-05-22
4 202317035443-REQUEST FOR EXAMINATION (FORM-18) [22-05-2023(online)].pdf 2023-05-22
5 202317035443-PROOF OF RIGHT [22-05-2023(online)].pdf 2023-05-22
6 202317035443-PRIORITY DOCUMENTS [22-05-2023(online)].pdf 2023-05-22
7 202317035443-POWER OF AUTHORITY [22-05-2023(online)].pdf 2023-05-22
8 202317035443-FORM 18 [22-05-2023(online)].pdf 2023-05-22
9 202317035443-FORM 1 [22-05-2023(online)].pdf 2023-05-22
10 202317035443-DRAWINGS [22-05-2023(online)].pdf 2023-05-22
11 202317035443-DECLARATION OF INVENTORSHIP (FORM 5) [22-05-2023(online)].pdf 2023-05-22
12 202317035443-COMPLETE SPECIFICATION [22-05-2023(online)].pdf 2023-05-22
13 202317035443-FORM 3 [06-11-2023(online)].pdf 2023-11-06