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Class Information
Number: 148/328
Name: Metal treatment > Stock > Ferrous (i.e., iron base) > Age or precipitation hardened or strengthed
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 5

Patent Number Title Of Patent Date Issued
8685180 Iron-based alloy powder Apr. 1, 2014
8652273 High tensile steel for deep drawing and manufacturing method thereof and high-pressure container produced thereof Feb. 18, 2014
8647449 Alloys for hardbanding weld overlays Feb. 11, 2014
8623154 Electron-beam welded joint, steel for electron-beam welding, and manufacturing method Jan. 7, 2014
8580154 Quaternary ammonium salts as a conversion coating or coating enhancement Nov. 12, 2013
8562761 Steel Oct. 22, 2013
8562760 Compositions and methods for determining alloys for thermal spray, weld overlay, thermal spray post processing applications, and castings Oct. 22, 2013
8562759 Compositions and methods for determining alloys for thermal spray, weld overlay, thermal spray post processing applications, and castings Oct. 22, 2013
8557060 High-strength steel material with excellent hydrogen embrittlement resistance Oct. 15, 2013
8535458 High-strength hot-rolled steel sheet and method for manufacturing the same Sep. 17, 2013
8535459 Steel material for hardening Sep. 17, 2013
8512487 Seamless expandable oil country tubular goods and manufacturing method thereof Aug. 20, 2013
8491732 Hot-rolled steel bar or wire rod Jul. 23, 2013
8480821 Piston ring material for internal combustion engine Jul. 9, 2013
8449698 Dual phase steel sheet and method of manufacturing the same May. 28, 2013
8440030 Fine spheroidized steel sheet with excellent heat treatment characteristic and method for manufacturing the same May. 14, 2013
8419869 Method of producing classes of non-stainless steels with high strength and high ductility Apr. 16, 2013
8398786 Precipitation hardening cold rolled steel sheet having excellent yield ratios, and the method for manufacturing the same Mar. 19, 2013
8394209 High-strength steel sheet excellent in resistance to stress-relief annealing and in low-temperature joint toughness Mar. 12, 2013
8328959 Lever-type cam follower Dec. 11, 2012
8328958 Steels for sour service environments Dec. 11, 2012
8317943 Ball for constant velocity joint and method for producing the same Nov. 27, 2012
8298353 Ultratough high-strength weldable plate steel and its method of manufacturing thereof Oct. 30, 2012
8257647 Strip of hot rolled micro-alloyed steel for obtaining finished pieces by cold pressing and shearing Sep. 4, 2012
8257512 Classes of modal structured steel with static refinement and dynamic strengthening and method of making thereof Sep. 4, 2012
8168009 Hard alloys with dry composition May. 1, 2012
8163108 High-strength cold-rolled steel sheet, high-strength galvanized steel sheet, and high-strength alloyed hot-dip galvanized steel sheet having excellent formability and weldability, and methods Apr. 24, 2012
8163107 High-strength steel excellent in weldability and process for production thereof Apr. 24, 2012
8152938 Hardened martensitic steel, method for producing a component from this steel and component obtained in this manner Apr. 10, 2012
8142574 Steel product for welding Mar. 27, 2012
8097097 Stainless steel having a high hardness and excellent mirror-finished surface property, and method of producing the same Jan. 17, 2012
8097207 Steel having high mechanical strength and wear resistance Jan. 17, 2012
8097096 Fire resistant steel excellent in high temperature strength, toughness, and reheating embrittlement resistance and process for production of the same Jan. 17, 2012
8092620 High strength austenitic TRIP steel Jan. 10, 2012
8075711 Hot-rolled high strength steel sheet having excellent ductility, and tensile fatigue properties and method for producing the same Dec. 13, 2011
8038934 High-strength spring steel excellent in brittle fracture resistance and method for producing same Oct. 18, 2011
8016954 Ultratough high-strength weldable plate steel and method of manufacture thereof Sep. 13, 2011
8016953 High-strength steel material with excellent hydrogen embrittlement resistance Sep. 13, 2011
8012271 Material for components of a gas turbine Sep. 6, 2011
8012272 Tool steels and manufacturing method thereof Sep. 6, 2011
7998285 Abrasion-resistant steel plate Aug. 16, 2011
7967922 Ferrous abrasion resistant sliding material Jun. 28, 2011
7959745 High-strength steel pipe of API X65 grade or higher Jun. 14, 2011
7955444 High strength steel sheet and method for manufacturing the same Jun. 7, 2011
7935197 High strength steel plate May. 3, 2011
7935198 Glass stability, glass forming ability, and microstructural refinement May. 3, 2011
7922836 Ferrous abrasion resistant sliding material Apr. 12, 2011
7879159 Martensitic stainless steel strengthened by Ni.sub.3Ti .eta.-phase precipitation Feb. 1, 2011
7849599 Imputing strength gradient in pressure vessels Dec. 14, 2010
7828912 High-strength hot-rolled steel shaft excellent in hole expandability and ductility and production method thereof Nov. 9, 2010

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