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Hot Stamp Molded Body

Abstract: Provided is a hot-stamp molded body characterized by: comprising a steel base material and a plating layer disposed on the surface of the steel base material; the plating layer having a prescribed chemical composition; the average C concentration from the surface of the steel base material to a depth of 1 µm in the thickness direction being 0.25 mass% or less; the steel base material containing 90% or more of martensite in terms of surface area ratio; the plating layer containing an ?-Zn phase; the amount of adhesion of the plating layer being 50 g/m2 or more per side; and having a Vickers hardness of 400 HV or more.

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Patent Information

Application #
Filing Date
28 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. HAYASHIDA, Shota
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
2. MITSUNOBU, Takuya
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 202517051281-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [28-05-2025(online)].pdf 2025-05-28
2 202517051281-STATEMENT OF UNDERTAKING (FORM 3) [28-05-2025(online)].pdf 2025-05-28
3 202517051281-REQUEST FOR EXAMINATION (FORM-18) [28-05-2025(online)].pdf 2025-05-28
4 202517051281-PROOF OF RIGHT [28-05-2025(online)].pdf 2025-05-28
5 202517051281-PRIORITY DOCUMENTS [28-05-2025(online)].pdf 2025-05-28
6 202517051281-POWER OF AUTHORITY [28-05-2025(online)].pdf 2025-05-28
7 202517051281-FORM 18 [28-05-2025(online)].pdf 2025-05-28
8 202517051281-FORM 1 [28-05-2025(online)].pdf 2025-05-28
9 202517051281-DRAWINGS [28-05-2025(online)].pdf 2025-05-28
10 202517051281-DECLARATION OF INVENTORSHIP (FORM 5) [28-05-2025(online)].pdf 2025-05-28
11 202517051281-COMPLETE SPECIFICATION [28-05-2025(online)].pdf 2025-05-28
12 202517051281-FORM 3 [25-09-2025(online)].pdf 2025-09-25