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Title:
FERRITIC STAINLESS STEEL FOR USE IN FUEL REFORMER AND METHOD OF MANUFACTURING FERRITIC STAINLESS STEEL
Document Type and Number:
WIPO Patent Application WO/2015/064739
Kind Code:
A1
Abstract:
The present invention provides a ferritic stainless steel for use in a fuel reformer, the ferritic stainless steel having both excellent oxidation resistance and excellent economy, without having to rely on adding large amounts of Ni or rare earth elements and without producing abnormal oxidation in a reformed gas environment. This ferritic stainless steel for use in a fuel reformer has a composition which, in mass %, is composed of at least one of Cr: 12-24%, C: 0.001-0.03%, Al: 0.002-4%, P: 0.05% or lower, S: 0.01% or lower, N: 0.03% or lower, Nb: 0.01-1%, Si: 0.3-4%, and Mn: over 0.1 up to 2%, the remainder being Fe and inevitable impurities, and satisfies formula (i) (Cr + 5Si + Mn + 2Nb ≥ 22 (i)). The chemical symbols in the formula signify the mass% of the relevant element that is contained in the steel.

Inventors:
HATANO MASAHARU (JP)
HAYASHI ATSUTAKA (JP)
MATSUYAMA HIROYUKI (JP)
ARIYOSHI HARUKI (JP)
Application Number:
PCT/JP2014/079061
Publication Date:
May 07, 2015
Filing Date:
October 31, 2014
Export Citation:
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Assignee:
NIPPON STEEL & SUMIKIN SST (JP)
International Classes:
C22C38/00; C22C38/26; C22C38/54; C23C8/18
Domestic Patent References:
WO2014010680A12014-01-16
Foreign References:
JP2012211379A2012-11-01
JP2013100595A2013-05-23
JP2012102376A2012-05-31
JP2011190524A2011-09-29
JP2011162843A2011-08-25
JP2009167443A2009-07-30
JP3886785B22007-02-28
JP3942876B22007-07-11
JP3910419B22007-04-25
JP2009167443A2009-07-30
JP2012012674A2012-01-19
JPH05320866A1993-12-07
JP2008101240A2008-05-01
JP2002256398A2002-09-11
Other References:
See also references of EP 3064606A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
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