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Class Information
Number: 420/68
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Molybdenum or tungsten containing > Titanium, zirconium or hafnium containing
Description: Alloy or metallic composition which additionally contains one or more of titanium, zirconium or hafnium..

Patents under this class:
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Patent Number Title Of Patent Date Issued
8470237 Stainless steel excellent in corrosion resistance, ferritic stainless steel excellent in resistance to crevice corrosion and formability, and ferritic stainless steel excellent in resistance t Jun. 25, 2013
8444916 Stainless steel excellent in corrosion resistance, ferritic stainless steel excellent in resistance to crevice corrosion and formability, and ferritic stainless steel excellent in resistance t May. 21, 2013
8383034 Ferritic stainless steel sheet for water heater excellent in corrosion resistance at welded part and steel sheet toughness Feb. 26, 2013
8361247 High strength corrosion resistant steel Jan. 29, 2013
8337749 Lean austenitic stainless steel Dec. 25, 2012
8337748 Lean austenitic stainless steel containing stabilizing elements Dec. 25, 2012
8317944 9 Cr-- 1 Mo steel material for high temperature application Nov. 27, 2012
8246767 Heat treated 9 Cr-1 Mo steel material for high temperature application Aug. 21, 2012
8163233 Martensitic stainless steel for welded structures Apr. 24, 2012
8153054 High-temperature alloy Apr. 10, 2012
8062584 Ferritic stainless steel sheet superior in heat resistance Nov. 22, 2011
7985372 Ferritic stainless steel sheet for use in raw material pipe for forming bellows pipe Jul. 26, 2011
7914732 Ferritic stainless steel cast iron, cast part using the ferritic stainless steel cast iron, and process for producing the cast part Mar. 29, 2011
7883663 Low chromium stainless steel superior in corrosion resistance of multipass welded heat affected zones and its method of production Feb. 8, 2011
7879159 Martensitic stainless steel strengthened by Ni.sub.3Ti .eta.-phase precipitation Feb. 1, 2011
7819991 Ferritic stainless steel sheet for raw material pipe for bellows pipe Oct. 26, 2010
7806993 Heat-resistant ferritic stainless steel and method for production thereof Oct. 5, 2010
7704338 Method of manufacturing a martensitic stainless steel Apr. 27, 2010
7572407 Martensitic stainless steel sheet and method for making the same Aug. 11, 2009
7445750 Reinforced durable steel, method for the production thereof, method for producing parts made of steel, and parts thus obtained Nov. 4, 2008
7297214 Free cutting alloy Nov. 20, 2007
6921440 Niobium-stabilized 14% chromium ferritic steel, and use of same in the automobile sector Jul. 26, 2005
6824672 Use of austenitic stainless steels in applications requiring anti-coking properties Nov. 30, 2004
6793744 Martenstic stainless steel having high mechanical strength and corrosion Sep. 21, 2004
6786981 Ferritic stainless steel sheet for fuel tank and fuel pipe Sep. 7, 2004
6770243 Chrome steel alloy Aug. 3, 2004
6641780 Ferritic stainless steel having high temperature creep resistance Nov. 4, 2003
6562293 Material formulation for galvanizing equipment submerged in molten aluminum and aluminum/zinc melts May. 13, 2003
6475642 Oxidation-resistant coatings, and related articles and processes Nov. 5, 2002
6214289 Iron-chromium-silicon alloys for high-temperature oxidation resistance Apr. 10, 2001
6123898 Low heat expansion alloy Sep. 26, 2000
6048413 Duplex stainless steel with high corrosion resistance Apr. 11, 2000
6024778 Production of iron or nickel-based products Feb. 15, 2000
5942184 Stainless steel for high-purity gases Aug. 24, 1999
5849111 Duplex stainless steel Dec. 15, 1998
5779820 Process for producing a ferritic stainless steel having an improved corrosion resistance, especially resistance to intergranular and pitting corrosion Jul. 14, 1998
5714115 Austenitic steel alloy Feb. 3, 1998
5709836 Chromium steel sheets having an excellent press formability Jan. 20, 1998
5512239 Ferritic stainless steel for heat exchanger Apr. 30, 1996
5427634 Ferrite system stainless steel having excellent nacl-induced hot corrosion resistance and high temperature strength Jun. 27, 1995
5395583 Stainless steel composition Mar. 7, 1995
5383983 Martensitic stainless steel suitable for use in oil wells Jan. 24, 1995
5158745 High-nitrogen ferritic heat-resisting steel Oct. 27, 1992
5110544 Stainless steel exhibiting excellent anticorrosion property for use in engine exhaust systems May. 5, 1992
5106578 Cast-to-near-net-shape steel body of heat-resistant cast steel Apr. 21, 1992
5091147 Heat-resistant cast steels Feb. 25, 1992
5069870 High-strength high-CR steel with excellent toughness and oxidation resistance Dec. 3, 1991
5061441 Highly wear-resistant roll steel for cold rolling mills Oct. 29, 1991
5035855 Martensitic precipitation-hardenable stainless steel Jul. 30, 1991
5030415 Structural part made of ferritic chromium-molybdenum steel which is resistant to concentrated sulfuric acid Jul. 9, 1991

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