Title:
STEEL SHEET PILE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/149365
Kind Code:
A1
Abstract:
According to the present invention, a steel sheet pile having high strength and high toughness is stably provided with high productivity. The steel sheet pile has a predetermined component composition and has a structure composed mainly of ferrite as a microstructure, wherein the ferrite has an average particle diameter of at most 15 μm and a maximum particle diameter of at most 40 μm, the area ratio of island-like martensite in the microstructure is at most 1.0%, and the steel sheet pile has a yield strength of at least 440 MPa and a vTrs of at most -10ºC.
Inventors:
ASAHI KENTA (JP)
OHTSUBO HIROFUMI (JP)
ANDO KEISUKE (JP)
OHTSUBO HIROFUMI (JP)
ANDO KEISUKE (JP)
Application Number:
PCT/JP2021/043278
Publication Date:
July 14, 2022
Filing Date:
November 25, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D8/00; B21B1/082; C22C38/00; C22C38/12; C22C38/58
Domestic Patent References:
| WO2018117228A1 | 2018-06-28 |
Foreign References:
| JP2008221318A | 2008-09-25 | |||
| JP2002020835A | 2002-01-23 | |||
| JP2016084524A | 2016-05-19 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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