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Class Information
Number: 420/66
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > 0.25 percent or more nitrogen containing > Group iv or v transition metal containing
Description: Alloy or metallic composition which additionally contains one or more of titanium, zirconium, hafnium, vanadium, niobium or tantaium.










Patents under this class:

Patent Number Title Of Patent Date Issued
8562758 Austenitic-ferritic stainless steel Oct. 22, 2013
8337748 Lean austenitic stainless steel containing stabilizing elements Dec. 25, 2012
8313691 Lean austenitic stainless steel Nov. 20, 2012
8025839 Steel alloy and tools or components manufactured out of the steel alloy Sep. 27, 2011
7815848 Corrosion resistant alloy and components made therefrom Oct. 19, 2010
7700037 Martensitic chromium-nitrogen steel and its use Apr. 20, 2010
7658883 Interstitially strengthened high carbon and high nitrogen austenitic alloys, oilfield apparatus comprising same, and methods of making and using same Feb. 9, 2010
RE40950 Ferritic stainless steel plate Nov. 10, 2009
7455811 Brazing material and brazed products manufactured therewith Nov. 25, 2008
7181847 Process for manufacturing a cylindrical hollow body and hollow body made thereby Feb. 27, 2007
6458221 Ferritic stainless steel plate Oct. 1, 2002
6024778 Production of iron or nickel-based products Feb. 15, 2000
5268142 High-nitrogen ferritic heat-resisting steel with high vanadium content and method of production thereof Dec. 7, 1993
5254307 High-nitrogen ferritic heat-resisting steel with high niobium content and method of production thereof Oct. 19, 1993
5158745 High-nitrogen ferritic heat-resisting steel Oct. 27, 1992
4888153 Fe-base build-up alloy excellent in resistance to corrosion and wear Dec. 19, 1989
4844755 High-strength heat-resisting ferritic steel pipe and tube Jul. 4, 1989
4824636 Austenitic steel with improved high-temperature strength and corrosion resistance Apr. 25, 1989
4689198 Austenitic stainless steel with high corrosion resistance and high strength when heat treated Aug. 25, 1987
4179285 Ferritic stainless steel Dec. 18, 1979
3990892 Wear resistant and heat resistant alloy steels Nov. 9, 1976
3969109 Oxidation and sulfidation resistant austenitic stainless steel Jul. 13, 1976











 
 
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