Hot Dip Coated Steel Sheet, Frame, And Method For Manufacturing Hot

Hot Dip Coated Steel Sheet, Frame, And Method For Manufacturing Hot Dip Coated Steel Sheet

Abstract: This hot-dipped steel sheet comprises a steel sheet and a plating layer provided on the steel sheet. The steel sheet has a prescribed first chemical composition. The tensile strength of the steel sheet is not less than 740 MPa. In a region from a surface of the steel sheet to 3 µm in the sheet thickness direction, the area ratio of SiO2 is less than 0.4%. The plating layer has a prescribed second chemical composition. The plating layer includes an Al-Fe interface alloy layer that is in contact with the steel sheet surface. The thickness of the Al-Fe interface alloy layer is 1.0-3.0 µm.

Patent Information

Application #

Filing Date

08 September 2025

Publication Number

42/2025

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. NAKAMURA Toyomitsu

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

Specification

Documents

Application Documents

#	Name	Date
1	202517084981-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [08-09-2025(online)].pdf	2025-09-08
2	202517084981-STATEMENT OF UNDERTAKING (FORM 3) [08-09-2025(online)].pdf	2025-09-08
3	202517084981-REQUEST FOR EXAMINATION (FORM-18) [08-09-2025(online)].pdf	2025-09-08
4	202517084981-PROOF OF RIGHT [08-09-2025(online)].pdf	2025-09-08
5	202517084981-PRIORITY DOCUMENTS [08-09-2025(online)].pdf	2025-09-08
6	202517084981-POWER OF AUTHORITY [08-09-2025(online)].pdf	2025-09-08
7	202517084981-FORM 18 [08-09-2025(online)].pdf	2025-09-08
8	202517084981-FORM 1 [08-09-2025(online)].pdf	2025-09-08
9	202517084981-DECLARATION OF INVENTORSHIP (FORM 5) [08-09-2025(online)].pdf	2025-09-08
10	202517084981-COMPLETE SPECIFICATION [08-09-2025(online)].pdf	2025-09-08