Title:
STEEL SHEET HAVING EXCELLENT PROCESSABILITY, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/125765
Kind Code:
A1
Abstract:
A steel sheet having excellent processability according to an embodiment of the present invention comprises 0.8-1.0 wt% of C, 0.1-0.3 wt% of Si, 0.2-0.5 wt% of Mn, 0.1-0.3 wt% of Cr, at most 0.03 wt% of P, and at most 0.005 wt% of S, with the balance being Fe and other inevitable impurities, and has a single-phase ferrite microstructure including spheroidized carbides, wherein the average particle diameter of the carbides may be 0.8 µm or less, and the number density of the carbides may be 2*105-7*105/mm2.
Inventors:
SON CHANG-YOUNG (KR)
CHOI JAE-HUN (KR)
KIM HAK-JUN (KR)
CHOI JAE-HUN (KR)
KIM HAK-JUN (KR)
Application Number:
PCT/KR2020/018395
Publication Date:
June 24, 2021
Filing Date:
December 16, 2020
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/18; B21B1/24; B21B3/00; C21D8/02
Foreign References:
| JP2003147485A | 2003-05-21 | |||
| JP2016222990A | 2016-12-28 | |||
| JP2006063384A | 2006-03-09 | |||
| JP2009215612A | 2009-09-24 | |||
| JP2007131907A | 2007-05-31 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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