Title:
AUTOMOTIVE EXHAUST SYSTEM FERRITIC STAINLESS STEEL HAVING IMPROVED HEAT RESISTANCE AND CONDENSED WATER CORROSION RESISTANCE, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/110858
Kind Code:
A1
Abstract:
Disclosed are an automotive exhaust system ferritic stainless steel having improved heat resistance and condensed water corrosion resistance, and a manufacturing method therefor. According to one embodiment of the present invention, the ferritic stainless steel comprising: a stainless steel base metal comprising, by wt%, 0.01% or less of C, 0.5-1.0% of Si, 0.5% or less of Mn, 0.035% or less of P, 0.01% or less of S, 11-18% of Cr, 0.013% or less of N, 0.15-0.5% of Ti, 0.03%-0.5% of Sn, and the balance of Fe and other inevitable impurities; and an aluminum plated layer formed on the stainless steel base metal, comprises a plating compound comprising (Al19FeMnSi2)5,31 (aluminum iron manganese silicide) at the interface between the stainless steel base metal and the aluminum plated layer.
Inventors:
KIM HYUNG JOON (KR)
Application Number:
PCT/KR2017/013589
Publication Date:
June 21, 2018
Filing Date:
November 27, 2017
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/60; C21D8/02; C22C38/00; C22C38/02; C22C38/04; C22C38/50
Foreign References:
| KR20130074220A | 2013-07-04 | |||
| KR20140083726A | 2014-07-04 | |||
| KR20120063793A | 2012-06-18 | |||
| JP2014152368A | 2014-08-25 | |||
| JP2001288544A | 2001-10-19 | |||
| KR20080110662A | 2008-12-18 |
Other References:
See also references of EP 3556897A4
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
Download PDF: