Title:
HOT-ROLLED STEEL PLATE
Document Type and Number:
WIPO Patent Application WO/2023/026582
Kind Code:
A1
Abstract:
Provided is a hot-rolled steel plate that has a prescribed chemical composition, the microstructure thereof being, in terms of surface area ratio, at least 70% pearlite, 0 to 30% ferrite, and 0 to 30% bainite. The perlite has, per 10 μm2, less than 10 grains of cementite having a major-axis length over 0.3 μm and an aspect ratio of less than 3.0, and has a tensile strength of at least 900 MPa.
Inventors:
NAKADA KOHEI (JP)
TOYODA TAKESHI (JP)
KOBAYASHI SHUNSUKE (JP)
TOYODA TAKESHI (JP)
KOBAYASHI SHUNSUKE (JP)
Application Number:
PCT/JP2022/017417
Publication Date:
March 02, 2023
Filing Date:
April 08, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/58; C21D9/46
Domestic Patent References:
| WO2020179737A1 | 2020-09-10 | |||
| WO2021176999A1 | 2021-09-10 |
Foreign References:
| KR20130068403A | 2013-06-26 | |||
| JP2015515548A | 2015-05-28 | |||
| JP2020509190A | 2020-03-26 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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