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Class Information
Number: 148/326
Name: Metal treatment > Stock > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Age or precipitation hardened or strengthened
Description: Stock material which has been first heated to a relatively high temperature to cause ingredients thereof to dissolve to form a solid solution and then aged, or heated to a lower temperature for an extended period of time whereby phases are precipitated which increase the hardness, or strength of the material.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8663403 High corrosion resistance precipitation hardened martensitic stainless steel Mar. 4, 2014
8657971 Brake disk excellent in temper softening resistance and toughness Feb. 25, 2014
RE44709 Soft Cr-containing steel Jan. 21, 2014
8440029 Stainless steel having good conductivity and ductility for use in fuel cell and method for producing the same May. 14, 2013
8361247 High strength corrosion resistant steel Jan. 29, 2013
8333849 Low-carbon martensitic chromium-containing steel Dec. 18, 2012
8328832 Medical knife Dec. 11, 2012
8317943 Ball for constant velocity joint and method for producing the same Nov. 27, 2012
8317944 9 Cr-- 1 Mo steel material for high temperature application Nov. 27, 2012
8273191 High-strength stainless steel material and production process of the same Sep. 25, 2012
8257512 Classes of modal structured steel with static refinement and dynamic strengthening and method of making thereof Sep. 4, 2012
8192682 High strength alloys Jun. 5, 2012
8172959 Austenitic stainless steel, manufacturing method for the same, and structure using the same May. 8, 2012
8124007 Stainless steel weld overlays with enhanced wear resistance Feb. 28, 2012
8097098 Martensitic stainless steel composition, method for making a mechanical part from said steel and resulting part Jan. 17, 2012
8097097 Stainless steel having a high hardness and excellent mirror-finished surface property, and method of producing the same Jan. 17, 2012
8071017 Low cost high strength martensitic stainless steel Dec. 6, 2011
8034197 Ultra-high strength stainless steels Oct. 11, 2011
8025839 Steel alloy and tools or components manufactured out of the steel alloy Sep. 27, 2011
8012272 Tool steels and manufacturing method thereof Sep. 6, 2011
8012271 Material for components of a gas turbine Sep. 6, 2011
7998238 Sintered sliding member and connecting device Aug. 16, 2011
7985306 High corrosion resistance precipitation hardened martensitic stainless steel Jul. 26, 2011
7967922 Ferrous abrasion resistant sliding material Jun. 28, 2011
7935198 Glass stability, glass forming ability, and microstructural refinement May. 3, 2011
7931758 Thermal mechanical treatment of ferrous alloys, and related alloys and articles Apr. 26, 2011
7922836 Ferrous abrasion resistant sliding material Apr. 12, 2011
7901519 High strength martensitic stainless steel alloys, methods of forming the same, and articles formed therefrom Mar. 8, 2011
7879159 Martensitic stainless steel strengthened by Ni.sub.3Ti .eta.-phase precipitation Feb. 1, 2011
7785427 High strength alloys Aug. 31, 2010
7785531 Alloy for roller bearing Aug. 31, 2010
7780798 Medical devices including hardened alloys Aug. 24, 2010
7780797 High strength thin steel excellent in hole expansibility, ductility and chemical treatment characteristics Aug. 24, 2010
7767038 Low-nickel austenitic stainless steel and method for producing same Aug. 3, 2010
7754305 High Mn austenitic stainless steel Jul. 13, 2010
7754144 High Nb, Ta, and Al creep- and oxidation-resistant 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
7708842 Metal gasket May. 4, 2010
7686898 Creep-resistant maraging heat-treatment steel Mar. 30, 2010
7531053 Fuel cell produced using a metallic material and its method of making May. 12, 2009
7520942 Nano-scale nitride-particle-strengthened high-temperature wrought ferritic and martensitic steels Apr. 21, 2009
7513960 Stainless steel having a high hardness and excellent mirror-finished surface property, and method of producing the same Apr. 7, 2009
7494551 Ferritic stainless steel plate with Ti and method for production thereof Feb. 24, 2009
7445750 Reinforced durable steel, method for the production thereof, method for producing parts made of steel, and parts thus obtained Nov. 4, 2008
7396422 Rolling bearing, material for rolling bearing, and equipment having rotating part using the rolling bearing Jul. 8, 2008
7361236 Martensitic stainless steel Apr. 22, 2008
7267730 Ferrite stainless steel for automobile exhaust system member superior in thermal fatigue strength Sep. 11, 2007
7258752 Wrought stainless steel compositions having engineered microstructures for improved heat resistance Aug. 21, 2007
7211159 Ferritic heat-resistant steel and method for production thereof May. 1, 2007

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