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Class Information
Number: 420/55
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Eight percent or more nickel containing > Over 0.1 percent carbon containing
Description: Alloy or metallic composition which additionally contains more than 0.1 percent of carbon.










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
8431072 Cast alumina forming austenitic stainless steels Apr. 30, 2013
8388889 Heat-resistant, austenitic cast steel and exhaust member made thereof Mar. 5, 2013
8158274 Welding material and welded joint structure Apr. 17, 2012
8124007 Stainless steel weld overlays with enhanced wear resistance Feb. 28, 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
7749432 Cast, heat-resistant austenitic stainless steels having reduced alloying element content Jul. 6, 2010
7731895 Austenitic Fe-Ni-Cr alloy Jun. 8, 2010
7442265 Heat-resistant cast steel excellent in aged ductility and creep rupture strength for hydrogen producing reaction tubes Oct. 28, 2008
6383310 Exhaust equipment member, internal combustion engine system using same, and method for producing such exhaust equipment member May. 7, 2002
6033626 Heat-resistant cast steel having high resistance to surface spalling Mar. 7, 2000
5749939 Melting of NI laterite in making NI alloyed iron or steel May. 12, 1998
5501835 Heat-resistant, austenitic cast steel and exhaust equipment member made thereof Mar. 26, 1996
5194220 Austenitic cast steel and articles made thereof Mar. 16, 1993
5021215 High-strength, heat-resistant steel with improved formability and method thereof Jun. 4, 1991
5019331 Heat-resistant alloy May. 28, 1991
4826655 Cast high silicon heat resistant alloys May. 2, 1989
4689198 Austenitic stainless steel with high corrosion resistance and high strength when heat treated Aug. 25, 1987
4610437 Crucible for holding salt baths for the boriding of steels Sep. 9, 1986
4444732 Tube for thermal cracking or reforming of hydrocarbon Apr. 24, 1984
4248629 Nickel- and chromium-base alloys possessing very-high resistance to carburization at very-high temperature Feb. 3, 1981
4127428 Stainless cast alloy steel for use at low temperatures Nov. 28, 1978
4102225 Low chromium oxidation resistant austenitic stainless steel Jul. 25, 1978
4086107 Heat treatment process of high-carbon chromium-nickel heat-resistant stainless steels Apr. 25, 1978
4086085 Austenitic iron alloys Apr. 25, 1978
4044582 Work guide for pipe reeling machines and the like and process for treating the same Aug. 30, 1977











 
 
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