Steel Sheet, And Method For Manufacturing Same

Abstract: This steel sheet has a predetermined chemical composition, wherein: in a metallic structure, the number density of alloy carbides having a major axis of 10-100 nm and present in crystal grain boundaries is 1.0×108 to 1.0×1011 /cm2, and the number density of alloy carbides having a major axis of at most 10 nm and present in crystal grains is 1.0×1016 to 1.0×1019 /cm3; and the steel sheet has a tensile strength of at least 1,030 MPa.

Patent Information

Application #

Filing Date

20 April 2023

Publication Number

47/2023

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. HIROSHIMA Hideto

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

2. YASUTOMI Takashi

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

3. SAKURADA Eisaku

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

Specification

Documents

Application Documents

#	Name	Date
1	202317028757-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [20-04-2023(online)].pdf	2023-04-20
2	202317028757-STATEMENT OF UNDERTAKING (FORM 3) [20-04-2023(online)].pdf	2023-04-20
3	202317028757-REQUEST FOR EXAMINATION (FORM-18) [20-04-2023(online)].pdf	2023-04-20
4	202317028757-PROOF OF RIGHT [20-04-2023(online)].pdf	2023-04-20
5	202317028757-PRIORITY DOCUMENTS [20-04-2023(online)].pdf	2023-04-20
6	202317028757-POWER OF AUTHORITY [20-04-2023(online)].pdf	2023-04-20
7	202317028757-FORM 18 [20-04-2023(online)].pdf	2023-04-20
8	202317028757-FORM 1 [20-04-2023(online)].pdf	2023-04-20
9	202317028757-DRAWINGS [20-04-2023(online)].pdf	2023-04-20
10	202317028757-DECLARATION OF INVENTORSHIP (FORM 5) [20-04-2023(online)].pdf	2023-04-20
11	202317028757-COMPLETE SPECIFICATION [20-04-2023(online)].pdf	2023-04-20
12	202317028757.pdf	2023-05-02
13	202317028757-FORM 3 [11-09-2023(online)].pdf	2023-09-11