Sn Zn Based Alloy Plated Steel Material, Battery Case And Fuel Tank

Abstract: This Sn-Zn based-alloy plated steel material is provided with: a steel material; a first alloy layer that is on the surface of the steel material and is mainly composed of Fe, Cr and Ni; a second alloy layer that is on the first alloy layer and is mainly composed of Sn, Fe, Ni and Zn; and an Sn-Zn based plating layer that is on the second alloy layer and is mainly composed of Sn and Zn. The surface coverage of the steel material surface by the first alloy layer is 70% or more. The second alloy layer is mainly composed of at least one of an FeSn2 phase and an Fe3Zn10 phase that is partially substituted by Ni. The Sn-Zn based plating layer is composed of 1.0-15.0% by mass of Zn, with the balance being made up of Sn and impurities. The total coating amount of the first alloy layer, the second alloy layer and the Sn-Zn based plating layer is 5-80 g/m2 per one surface.

Patent Information

Application #

Filing Date

28 July 2025

Publication Number

41/2025

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. YAMAGUCHI Shinichi

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

Specification

Documents

Application Documents

#	Name	Date
1	202517071568-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [28-07-2025(online)].pdf	2025-07-28
2	202517071568-STATEMENT OF UNDERTAKING (FORM 3) [28-07-2025(online)].pdf	2025-07-28
3	202517071568-REQUEST FOR EXAMINATION (FORM-18) [28-07-2025(online)].pdf	2025-07-28
4	202517071568-PROOF OF RIGHT [28-07-2025(online)].pdf	2025-07-28
5	202517071568-PRIORITY DOCUMENTS [28-07-2025(online)].pdf	2025-07-28
6	202517071568-POWER OF AUTHORITY [28-07-2025(online)].pdf	2025-07-28
7	202517071568-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [28-07-2025(online)].pdf	2025-07-28
8	202517071568-FORM 18 [28-07-2025(online)].pdf	2025-07-28
9	202517071568-FORM 1 [28-07-2025(online)].pdf	2025-07-28
10	202517071568-DRAWINGS [28-07-2025(online)].pdf	2025-07-28
11	202517071568-DECLARATION OF INVENTORSHIP (FORM 5) [28-07-2025(online)].pdf	2025-07-28
12	202517071568-COMPLETE SPECIFICATION [28-07-2025(online)].pdf	2025-07-28