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Title:
FERRITIC STAINLESS STEEL
Document Type and Number:
WIPO Patent Application WO/2019/151124
Kind Code:
A1
Abstract:
Provided is ferritic stainless steel having both exceptional resistance to repeated oxidation and exceptional thermal fatigue characteristics. Ferritic stainless steel that contains, in terms of percent by mass, 0.020% or less of C, 0.25-1.0% of Si, 0.05-0.50% of Mn, 0.050% or less of P, 0.008% or less of S, 0.02-0.60% of Ni, 0.001-0.08% of Al, 18.0-20.0% of Cr, 0.30-0.80% of Nb, 1.80-2.50% of Mo, 0.015% or less of N, 0.01-0.40% of Zr, and 0.01-0.30% of Co, the balance being Fe and unavoidable impurities, and the ferritic stainless steel satisfying formula (1). Formula (1): Zr + Co: 0.03-0.50% (Zr and Co in formula (1) indicate the respective element contents (in terms of percent by mass) thereof.)

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Inventors:
NAKAMURA TETSUYUKI (JP)
ISHIKAWA SHIN (JP)
SUGIHARA REIKO (JP)
Application Number:
PCT/JP2019/002412
Publication Date:
August 08, 2019
Filing Date:
January 25, 2019
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/52; C22C38/60; C21D9/46
Domestic Patent References:
WO2005064030A12005-07-14
Foreign References:
JP2017179398A2017-10-05
JPH08218154A1996-08-27
JP2004018921A2004-01-22
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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