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Title:
STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2023/100424
Kind Code:
A1
Abstract:
The present invention provides a steel sheet having a specific chemical composition, in which: index A represented by 10 [C] + 0.3 [Mn] − 0.2 [Si] − 0.6 [Al] − 0.05 [Cr] − 0.2 [Mo] is 1.10% or less; the metal structure by surface area% is 70 to 95% ferrite and 5 to 30% hard phase; the maximum continuous length in the rolling direction of the hard phase at a position 1/2 sheet thickness is 80 μm or less; and the maximum continuous length in the rolling direction of the hard phase at a position 1/4 sheet thickness is 40 μm or less.

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Inventors:
HIRONAKA SATOSHI (JP)
ITO YASUHIRO (JP)
NAGANO MAI (JP)
Application Number:
PCT/JP2022/031750
Publication Date:
June 08, 2023
Filing Date:
August 23, 2022
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D9/46; C22C38/00; C22C38/60
Domestic Patent References:
WO2020145256A12020-07-16
WO2020145259A12020-07-16
Foreign References:
JP2010024505A2010-02-04
JP2008007841A2008-01-17
JP2019171447A2019-10-10
JP2005220430A2005-08-18
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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