Title:
SULFURIC ACID-RESISTANT HOT-ROLLED THICK STEEL SHEET AND PRODUCTION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2023/223744
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a sulfuric acid-resistant hot-rolled thick steel sheet that has a sheet thickness of 6.0-14.0 mm and a tensile strength of not less than 490 MPa, and a production method therefor. Provided is a sulfuric acid-resistant hot-rolled thick steel sheet that comprises a prescribed component composition, wherein: tensile strength in a tensile test at normal temperature is not less than 490 MPa; at a position at 1/4 of sheet thickness, the area ratio of ferrite is not less than 70%, the area ratio of bainite is 10-30%, and the combined area ratio of the remaining structure other than ferrite and bainite is less than 5%; and sheet thickness is 6.0-14.0 mm.
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Inventors:
ENDO TAKAYUKI (JP)
TADANI TETSUSHI (JP)
TADANI TETSUSHI (JP)
Application Number:
PCT/JP2023/015432
Publication Date:
November 23, 2023
Filing Date:
April 18, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C22C38/00; C21D8/02; C22C38/60
Domestic Patent References:
| WO2018038198A1 | 2018-03-01 | |||
| WO2015147166A1 | 2015-10-01 |
Foreign References:
| JP2016108625A | 2016-06-20 | |||
| JP2018150601A | 2018-09-27 | |||
| CN112159921A | 2021-01-01 |
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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