Hot Dip Zn Plated Steel Sheet

Abstract: This hot-dip Zn plated steel sheet includes a steel sheet and a plating layer formed on at least a portion of the surface of the steel sheet. The plating layer has a chemical composition containing, in mass%, 6.00-35.00% of Al, 2.00-12.00% of Mg, 0.005-2.00% of Ca, 0-2.00% of Si, 0-2.00% of Fe, 0-0.50% of Sb, 0-0.50% of Sr, 0-0.50% of Pb, 0-1.00% of Sn, 0-1.00% of Cu, 0-1.00% of Ti, 0-1.00% of Ni, 0-1.00% of Mn, and 0-1.00% of Cr, the remaining portion being Zn and impurities. In a cross section of the plating layer in the thickness direction, the area percentage of a MgZn2 phase is 15-60%. The MgZn2 phase contains a Ca-based intermetallic compound having a circle equivalent diameter of 0.10 µm or less.

Patent Information

Application #

Filing Date

21 February 2023

Publication Number

18/2024

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. AKAHOSHI Makoto

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

4. TAKAHASHI Takehiro

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

Specification

Documents

Application Documents

#	Name	Date
1	202317011735.pdf	2023-02-21
2	202317011735-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [21-02-2023(online)].pdf	2023-02-21
3	202317011735-STATEMENT OF UNDERTAKING (FORM 3) [21-02-2023(online)].pdf	2023-02-21
4	202317011735-REQUEST FOR EXAMINATION (FORM-18) [21-02-2023(online)].pdf	2023-02-21
5	202317011735-PROOF OF RIGHT [21-02-2023(online)].pdf	2023-02-21
6	202317011735-PRIORITY DOCUMENTS [21-02-2023(online)].pdf	2023-02-21
7	202317011735-POWER OF AUTHORITY [21-02-2023(online)].pdf	2023-02-21
8	202317011735-FORM 18 [21-02-2023(online)].pdf	2023-02-21
9	202317011735-FORM 1 [21-02-2023(online)].pdf	2023-02-21
10	202317011735-DECLARATION OF INVENTORSHIP (FORM 5) [21-02-2023(online)].pdf	2023-02-21
11	202317011735-COMPLETE SPECIFICATION [21-02-2023(online)].pdf	2023-02-21
12	202317011735-Verified English translation [28-04-2023(online)].pdf	2023-04-28
13	202317011735-FORM 3 [11-07-2023(online)].pdf	2023-07-11