Steel Sheet

Abstract: Provided is a steel sheet that has a chemical composition including 0.020-0.100% of C, 1.00-2.50% of Mn, not more than 0.100% of P, not more than 0.0200% of S, 0.005-0.700% Al, not more than 0.0150% of N, not more than 0.0100% of O, etc., the remaining portion being Fe and impurities, that has a metal structure including, in area%, 70-97% of ferrite and 3-30% of a hard phase, and in which the Str of the surface is 0.35-0.75 and a difference ?Str between the Str and an Str obtained after the steel sheet is imparted with a 5%-tensile strain is not more than 0.15.

Patent Information

Application #

Filing Date

15 July 2024

Publication Number

51/2024

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. HIRONAKA, Satoshi

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

2. ITO, Yasuhiro

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

3. NAGANO, Mai

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

4. NAKANO, Katsuya

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

Specification

Documents

Application Documents

#	Name	Date
1	202417053876-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [15-07-2024(online)].pdf	2024-07-15
2	202417053876-STATEMENT OF UNDERTAKING (FORM 3) [15-07-2024(online)].pdf	2024-07-15
3	202417053876-REQUEST FOR EXAMINATION (FORM-18) [15-07-2024(online)].pdf	2024-07-15
4	202417053876-PROOF OF RIGHT [15-07-2024(online)].pdf	2024-07-15
5	202417053876-PRIORITY DOCUMENTS [15-07-2024(online)].pdf	2024-07-15
6	202417053876-POWER OF AUTHORITY [15-07-2024(online)].pdf	2024-07-15
7	202417053876-FORM 18 [15-07-2024(online)].pdf	2024-07-15
8	202417053876-FORM 1 [15-07-2024(online)].pdf	2024-07-15
9	202417053876-DECLARATION OF INVENTORSHIP (FORM 5) [15-07-2024(online)].pdf	2024-07-15
10	202417053876-COMPLETE SPECIFICATION [15-07-2024(online)].pdf	2024-07-15
11	202417053876-FORM 3 [07-11-2024(online)].pdf	2024-11-07