Title:
MEDIUM-CARBON STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2020/203445
Kind Code:
A1
Abstract:
Provided are a medium-carbon steel sheet which is soft and in which the r value thereof has small in-plane anisotropy, and a method for manufacturing the same. The medium-carbon steel sheet contains 0.10 mass% to 0.70 mass% C, the yield stress thereof is 400 MPa or less, the in-plane anisotropy index Δr of the r value thereof is -0.2 to 0.2, and the difference between rmax and rmin thereof is 0.3 or less. Here, Δr = (r0 – 2r45 + r90)/2, and rmax and rmin are the maximum value and the minimum value, respectively, from among r0, r45, and r90.
Inventors:
SUZUKI MASAHITO (JP)
AKIDUKI MAKOTO (JP)
AKIDUKI MAKOTO (JP)
Application Number:
PCT/JP2020/012914
Publication Date:
October 08, 2020
Filing Date:
March 24, 2020
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C21D9/46; C22C38/18; C22C38/06
Domestic Patent References:
| WO2016060248A1 | 2016-04-21 |
Foreign References:
| JP2001073077A | 2001-03-21 | |||
| JP2001073076A | 2001-03-21 | |||
| JP2013119635A | 2013-06-17 | |||
| KR100823598B1 | 2008-04-21 | |||
| JP2003064444A | 2003-03-05 | |||
| JP2004137554A | 2004-05-13 | |||
| JP2013224476A | 2013-10-31 | |||
| JP2012031469A | 2012-02-16 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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