Title:
FERRITIC STAINLESS STEEL AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/105065
Kind Code:
A1
Abstract:
Provided is ferritic stainless steel having excellent high temperature resistance and press formability. The ferritic stainless steel of the present invention contains: C: 0.007 wt% or less (0 excluded), Si: 0.3 wt% or less (0 excluded), Mn: 0.5-1.5 wt%, P: 0.02 wt% or less (0 excluded), S: 0.02 wt% or less (0 excluded), Cr: 14-17 wt%, Mo: 1.0 wt% or less (0 or less), W: 1-4 wt%, Ti: 0.3 wt% or less (0 or less), Nb: 0.6 wt% or less (0 excluded), N: 0.01 wt% or less (0 excluded), Al: 0.1 wt% or less (0 or less), and the remainder being Fe and other unavoidable impurities, wherein the average size of the precipitation phase (Fe2W) is less than 1µm, and satisfies formula below. A = [(Fe+W) precipitation amount / (Nb) precipitation amount] < 1.0
Inventors:
KIM SANG SEOK (KR)
JUNG IL CHAN (KR)
JUNG IL CHAN (KR)
Application Number:
PCT/KR2015/014060
Publication Date:
June 30, 2016
Filing Date:
December 21, 2015
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/38; C21D8/00; C22C38/22
Foreign References:
| KR20120108786A | 2012-10-05 | |||
| KR20050007572A | 2005-01-19 | |||
| KR20140117586A | 2014-10-07 | |||
| JP2002241843A | 2002-08-28 | |||
| JP2002105605A | 2002-04-10 |
Attorney, Agent or Firm:
SHINSEGI PATENT LAW FIRM (KR)
특허법인 신세기 (KR)
특허법인 신세기 (KR)
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