Title:
AUSTENITIC STAINLESS STEEL
Document Type and Number:
WIPO Patent Application WO/2012/133291
Kind Code:
A1
Abstract:
Provided is an austenitic stainless steel having superior surface glossiness. The steel contains, by mass%, 0.2 to 2.0% of Si, 0.3 to 5.0% of Mn, 0.007% or less of S, 7.0 to 15.0% of Ni, 15.0 to 20.0% of Cr, 0.005% or less of Al, 0.002% or less of Ca, 0.001% or less of Mg, and 0.002 to 0.01% of O, with the balance being Fe and inevitable impurities. The Mn, Si, and Al are present at an (Mn+Si)/Al value of 200 or greater. Oxide nonmetallic inclusions have MnO-SiO2-Al2O3-CaO as the primary structural component thereof, where there is 30 mass% or less of Al2O3, 5 mass% or less of Cr2O3, and 10 mass% or less of MgO. The maximum surface area of one sulfide in the sulfide nonmetallic inclusions is 100 μm2 or less.
Inventors:
KATSUKI JUNICHI (JP)
Application Number:
PCT/JP2012/057728
Publication Date:
October 04, 2012
Filing Date:
March 26, 2012
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
KATSUKI JUNICHI (JP)
KATSUKI JUNICHI (JP)
International Classes:
C22C38/00; C22C38/58
Foreign References:
| JPH0860308A | 1996-03-05 | |||
| JPH04143255A | 1992-05-18 | |||
| JPH09137255A | 1997-05-27 | |||
| JPH0499215A | 1992-03-31 | |||
| JPH08104915A | 1996-04-23 |
Other References:
See also references of EP 2690190A4
Attorney, Agent or Firm:
KABASAWA Joo et al. (JP)
Noboru Kabasawa (JP)
Noboru Kabasawa (JP)
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Claims: