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Class Information
Number: 420/54
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Eight percent or more nickel containing > Group iv or v transition metal containing
Description: Alloy or metallic composition which additionally contains one or more titanium, zirconium, hafnium, vanadium, niobium or tantalum.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8431072 Cast alumina forming austenitic stainless steels Apr. 30, 2013
8133431 Austenitic stainless steel Mar. 13, 2012
7959854 Heat resistant alloy adapted to precipitate fine Ti-Nb-Cr carbide or Ti-Nb-Zr-Cr carbide Jun. 14, 2011
7754142 Acid resistant austenitic alloy for valve seat inserts Jul. 13, 2010
7731895 Austenitic Fe-Ni-Cr alloy Jun. 8, 2010
7651575 Wear resistant high temperature alloy Jan. 26, 2010
7455811 Brazing material and brazed products manufactured therewith Nov. 25, 2008
7442265 Heat-resistant cast steel excellent in aged ductility and creep rupture strength for hydrogen producing reaction tubes Oct. 28, 2008
7014720 Austenitic stainless steel tube excellent in steam oxidation resistance and a manufacturing method thereof Mar. 21, 2006
6592685 Transformation controlled nitride precipitation hardening heat treatable steel Jul. 15, 2003
6511554 Stainless spheroidal carbide cast iron material Jan. 28, 2003
6485679 Heat resistant austenitic stainless steel Nov. 26, 2002
6406563 Stainless spheroidal carbide cast iron Jun. 18, 2002
6391254 Fe-Cr-Ni alloy for electron gun electrodes May. 21, 2002
6355212 Alloy for corrosion-resistant coatings or surface coatings Mar. 12, 2002
6290905 Welding material Sep. 18, 2001
6146582 Austenitic stainless steel with good oxidation resistance Nov. 14, 2000
5948182 Heat resisting steel Sep. 7, 1999
5827476 Austenitic stainless steel with good oxidation resistance Oct. 27, 1998
5779972 Heat resisting alloys, exhaust valves and knit meshes for catalyzer for exhaust gas Jul. 14, 1998
5753178 Austenitic stainless steel for use when hot May. 19, 1998
5660939 Stainless steel alloy Aug. 26, 1997
5501835 Heat-resistant, austenitic cast steel and exhaust equipment member made thereof Mar. 26, 1996
5393487 Steel alloy having improved creep strength Feb. 28, 1995
5340413 Fe-NI based soft magnetic alloys having nanocrystalline structure Aug. 23, 1994
5242655 Stainless steel Sep. 7, 1993
5194220 Austenitic cast steel and articles made thereof Mar. 16, 1993
5164270 Iron-based alloys with corrosion resistance to oxygen-sulfur mixed gases Nov. 17, 1992
5147602 Corrosion resistant high chromium stainless steel alloy Sep. 15, 1992
5137684 Hydrogen embrittlement resistant structural alloy Aug. 11, 1992
5116570 Stainless maraging steel having high strength, high toughness and high corrosion resistance and it's manufacturing process May. 26, 1992
5021215 High-strength, heat-resistant steel with improved formability and method thereof Jun. 4, 1991
5019331 Heat-resistant alloy May. 28, 1991
4902472 High strength stainless steel Feb. 20, 1990
4816218 Process of using an iron-nickel-chromium alloy in an oxidation attacking environment Mar. 28, 1989
4808371 Exterior protective member made of austenitic stainless steel for a sheathing heater element Feb. 28, 1989
4780276 Castable hot corrosion resistant alloy Oct. 25, 1988
4729790 Rapidly solidified aluminum based alloys containing silicon for elevated temperature applications Mar. 8, 1988
4671929 Austenitic stainless steel with improved resistance to corrosion by nitric acid Jun. 9, 1987
4581067 High-strength austenitic steel Apr. 8, 1986
4470848 Oxidation sulfidation resistance of Fe-Cr-Ni alloys Sep. 11, 1984
4340575 Manufacture of hydroxylammonium salts Jul. 20, 1982
4248629 Nickel- and chromium-base alloys possessing very-high resistance to carburization at very-high temperature Feb. 3, 1981
4246046 Stainless steel container for fluid and method Jan. 20, 1981
4234385 Nuclear fuel element Nov. 18, 1980
4165997 Intermediate temperature service alloy Aug. 28, 1979
4141762 Two-phase stainless steel Feb. 27, 1979
4119456 High-strength cast heat-resistant alloy Oct. 10, 1978
4102225 Low chromium oxidation resistant austenitic stainless steel Jul. 25, 1978
4086085 Austenitic iron alloys Apr. 25, 1978

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