Title:
FERRITE-BASED STAINLESS STEEL HAVING IMPROVED RIDGING RESISTANCE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/124526
Kind Code:
A1
Abstract:
The present specification discloses a ferrite-based stainless steel having improved ridging resistance. According to an embodiment of the disclosed ferrite-based stainless steel having improved ridging resistance, by wt%, 0.001-0.3% of C; 0.01-1.0% of Si; 0.1-3.0% of Mn; 10-15% of Cr; 0.001-0.3% of N; 0.03% or less of P; 1.0% or less of Ni; 1.0% or less of Cu; 1.0% or less of Al; 0.003% or less of Mo; 1.0% or less of Ti; the balance of Fe; and inevitable other impurities, are comprised, and γS represented by equation (1) below satisfies 6 or more. Equation (1): γS = 900C-30Si+12Mn+23Ni-17Cr-12Mo+12Cu-49Ti-52Al+950N+178 (where C, Si, Mn, Ni, Cr, Mo, Cu, Ti, Al, and N represent contents (wt%) of the respective elements).
Inventors:
KONG JUNGHYUN (KR)
LEE MUN-SOO (KR)
LEE MUN-SOO (KR)
Application Number:
PCT/KR2021/011464
Publication Date:
June 16, 2022
Filing Date:
August 26, 2021
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/58; C21D8/04; C21D9/46; C22C38/44; C22C38/50
Domestic Patent References:
| WO2015099459A1 | 2015-07-02 |
Foreign References:
| JP2000256750A | 2000-09-19 | |||
| JP2004197197A | 2004-07-15 | |||
| JPH07268461A | 1995-10-17 | |||
| KR20140080348A | 2014-06-30 |
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
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