Title:
FERRITIC STAINLESS STEEL HAVING EXCELLENT HEAT RESISTANCE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/131503
Kind Code:
A1
Abstract:
Disclosed is ferritic stainless steel having excellent heat resistance through the control of a component system. The ferritic stainless steel having excellent heat resistance according to an embodiment of the present invention comprises, by weight%, 0.0005-0.02% of C 0.005-0.02% of N, 0.01-1.0% of Si, 0.01-1.2% of Mn, 0.001-0.05% of P, 10.0-25.0% of Cr, 1.5-3.0% of Mo, 0.3-0.7% of Nb, 0.5-2.0% of W, and the remainder of Fe and inevitable impurities, wherein in a matrix, a weight proportion of solid solution Mo of 85% or more and a weight proportion of solid solution W of 85% or more are included, and expressions (1) and (2) below are satisfied. (1) Mo ＋ W ＋ Nb ≥ 3 (2) (Mo ＋ W)/Nb ≤ 8
Inventors:
PARK JIEON (KR)
PAEK JONG-SU (KR)
PAEK JONG-SU (KR)
Application Number:
PCT/KR2021/014156
Publication Date:
June 23, 2022
Filing Date:
October 14, 2021
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/26; C21D8/02; C21D9/46; C22C38/22
Foreign References:
| KR20200033055A | 2020-03-27 | |||
| KR20180109865A | 2018-10-08 | |||
| KR20120108786A | 2012-10-05 | |||
| JP2013209726A | 2013-10-10 | |||
| CN105200330A | 2015-12-30 |
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
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