Title:
DUPLEX STAINLESS STEEL
Document Type and Number:
WIPO Patent Application WO/2022/196498
Kind Code:
A1
Abstract:
Duplex stainless steel which has: a chemical composition comprising, by mass%, 0.10% or less of C, 3.0% or less of Si, 8.0% or less of Mn, 0.040% or less of P, 0.020% or less of S, 20.0 to 38.0% of Cr, 3.00 to 12.00% of Ni, 1.0 to 6.5% of Mo, 3.0% or less of Cu, 0.200 to 0.700% of N, 0 to 1.0% of Al, 0 to 1.0% of Sn, 0 to 6.0% of W, 0 to 3.0% of Co, 0 to 0.50% of Nb, 0 to 1.5% of Ti, 0 to 1.0% of V, 0 to 0.50% of Zr, 0 to 0.100% of Ta, 0 to 0.100% of B, 0 to 0.50% of Ca, 0 to 0.50% of Mg, 0 to 0.10% of REM, and the balance Fe and impurities; a PRE of 41.0 or higher; a Creq/Nieq of 2.360 to 2.530; an average Md value of 0.9140 or less; and an σ-phase area ratio of 2.0% or less.
Inventors:
OGYU SHINSUKE (JP)
ITOH HIROKI (JP)
AMAFUJI KYOHTAROH (JP)
IWASAKI YUUJI (JP)
ITOH HIROKI (JP)
AMAFUJI KYOHTAROH (JP)
IWASAKI YUUJI (JP)
Application Number:
PCT/JP2022/010351
Publication Date:
September 22, 2022
Filing Date:
March 09, 2022
Export Citation:
Assignee:
NIPPON STEEL STAINLESS STEEL CORP (JP)
International Classes:
C22C38/00; C21D8/06; C22C38/58
Foreign References:
| JP2018003054A | 2018-01-11 | |||
| JP2016053213A | 2016-04-14 | |||
| JP2010508439A | 2010-03-18 | |||
| JP2011202247A | 2011-10-13 | |||
| JP2013119627A | 2013-06-17 | |||
| JP2017080765A | 2017-05-18 |
Other References:
PÉREZ-NÚÑEZ DANIEL, SUNWOO SUN-YOUNG, SÁNCHEZ ELENA G., HALEY NICHOLAS, GARCÍA-BELMONTE RAQUEL, NOGAL MARISA, MOROZOV IGOR, MADDEN: "Evaluation of a viral DNA-protein immunization strategy against African swine fever in domestic pigs", VETERINARY IMMUNOLOGY AND IMMUNOPATHOLOGY, ELSEVIER, AMSTERDAM, NL, vol. 208, 1 February 2019 (2019-02-01), AMSTERDAM, NL, pages 34 - 43, XP055967620, ISSN: 0165-2427, DOI: 10.1016/j.vetimm.2018.11.018
M. MORINAGA ET AL., J. PHYS. SOC. JPN., vol. 53, 1984, pages 653
M. MORINAGA ET AL., J. PHYS. SOC. JPN., vol. 53, 1984, pages 653
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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