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Class Information
Number: 420/48
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Eight percent or more nickel containing > Over 2 percent manganese 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 tantalum

Patents under this class:

Patent Number Title Of Patent Date Issued
8663549 Heat-resisting steel for engine valves excellent in high-temperature strength Mar. 4, 2014
8486204 Hinge device and electronic device using the same Jul. 16, 2013
8192682 High strength alloys Jun. 5, 2012
7959854 Heat resistant alloy adapted to precipitate fine Ti-Nb-Cr carbide or Ti-Nb-Zr-Cr carbide Jun. 14, 2011
7754144 High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel Jul. 13, 2010
7754305 High Mn austenitic stainless steel Jul. 13, 2010
7749431 Stainless steel for high-pressure hydrogen gas Jul. 6, 2010
7744813 Oxidation resistant high creep strength austenitic stainless steel Jun. 29, 2010
7531129 Stainless steel for high-pressure hydrogen gas May. 12, 2009
6939415 Austenitic stainless steel and manufacturing method thereof Sep. 6, 2005
6918968 Austenitic stainless steel Jul. 19, 2005
6896747 Austenitic alloy for heat strength with improved pouring and manufacturing, process for manufacturing billets and wire May. 24, 2005
6656418 Steel composition, method for making same and parts produced from said compositions, particularly valves Dec. 2, 2003
6033626 Heat-resistant cast steel having high resistance to surface spalling Mar. 7, 2000
5411701 Stainless steel May. 2, 1995
5340534 Corrosion resistant austenitic stainless steel with improved galling resistance Aug. 23, 1994
5242655 Stainless steel Sep. 7, 1993
5021215 High-strength, heat-resistant steel with improved formability and method thereof Jun. 4, 1991
5019332 Heat, corrosion, and wear resistant steel alloy May. 28, 1991
5000912 Nickel titanium martensitic steel for surgical needles Mar. 19, 1991
4892704 Low Si high-temperature strength steel tube with improved ductility and toughness Jan. 9, 1990
4671929 Austenitic stainless steel with improved resistance to corrosion by nitric acid Jun. 9, 1987
4615658 Shroud for gas turbines Oct. 7, 1986
4581067 High-strength austenitic steel Apr. 8, 1986
4560408 Method of using chromium-nickel-manganese-iron alloy with austenitic structure in sulphurous environment at high temperature Dec. 24, 1985
4484958 Non-magnetic alloy having high hardness and good weldability Nov. 27, 1984
4381941 Method for improving surface defect of specific steel resistant to concentrated nitric acid May. 3, 1983
4279648 High silicon chromium nickel steel for strong nitric acid Jul. 21, 1981
4141762 Two-phase stainless steel Feb. 27, 1979
4086085 Austenitic iron alloys Apr. 25, 1978
3969109 Oxidation and sulfidation resistant austenitic stainless steel Jul. 13, 1976

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