Title:
STEEL PLATE
Document Type and Number:
WIPO Patent Application WO/2024/029145
Kind Code:
A1
Abstract:
Provided is a steel plate characterized by having: a specific chemical composition; an average Vicker's hardness Hs, in a region spanning from at least one surface to 10% of the plate thickness, that is no greater than 0.60 times the average Vicker's hardness Hc at a position of 1/2 the plate thickness; a ratio of macroscopic brittle fracture surface of 35.0% or less as determined by a Charpy impact test at room temperature; and a tensile strength of 1500 MPa or greater.
Inventors:
OHGA KOYO (JP)
TAKEDA KENGO (JP)
HIRONAKA SATOSHI (JP)
TAKEDA KENGO (JP)
HIRONAKA SATOSHI (JP)
Application Number:
PCT/JP2023/016439
Publication Date:
February 08, 2024
Filing Date:
April 26, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C21D9/46; C22C38/60
Domestic Patent References:
| WO2018151331A1 | 2018-08-23 | |||
| WO2018151322A1 | 2018-08-23 | |||
| WO2019212047A1 | 2019-11-07 | |||
| WO2019212045A1 | 2019-11-07 | |||
| WO2020045220A1 | 2020-03-05 | |||
| WO2023026819A1 | 2023-03-02 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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