Title:
FERRITIC STAINLESS STEEL HAVING REDUCED CARBON SLUDGE ADSORPTION FOR EXHAUST SYSTEM HEAT EXCHANGER AND METHOD OF MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/062617
Kind Code:
A1
Abstract:
Disclosed are a ferritic stainless steel having reduced carbon sludge adsorption for an exhaust system heat exchanger, and a method of manufacturing same.. The ferritic stainless steel having reduced carbon sludge adsorption for an exhaust system heat exchanger, according to one embodiment of the present invention, comprises: 0.003-0.1 wt % of C; 0.01-2.0 wt % of Si; 0.01-1.5 wt % of Mn; 0.05 wt % or less of P; 0.005 wt % of less of S; 10-30 wt % of Cr; 0.001-0.10 wt % of Ti; 0.001-0.15 wt % of Al; 0.003-0.03 wt % of N; 0.3-0.6 wt % of Nb; 0.01-2.5 wt % of Mo; and the remainder being Fe and unavoidable impurities, wherein a TiN precipitate having a size of 0.1㎛ or greater is dispersed in an amount of 2.5*104ea/mm2 or less in a ferrite base of a surface part.
Inventors:
JUNG IL CHAN (KR)
KIM JONG CHUL (KR)
SHIM JAE HONG (KR)
AHN DEOK CHAN (KR)
KIM JIN SUK (KR)
KIM JONG CHUL (KR)
SHIM JAE HONG (KR)
AHN DEOK CHAN (KR)
KIM JIN SUK (KR)
Application Number:
PCT/KR2016/013474
Publication Date:
April 05, 2018
Filing Date:
November 22, 2016
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/00; C22C38/02; C22C38/04; C22C38/06; C22C38/20; C22C38/22; C22C38/26; C22C38/28
Foreign References:
| KR20100087236A | 2010-08-03 | |||
| KR20150074691A | 2015-07-02 | |||
| JP2010235995A | 2010-10-21 | |||
| KR101553607B1 | 2015-09-17 | |||
| KR20110036753A | 2011-04-08 |
Other References:
See also references of EP 3521471A4
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
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