Patents
Sitemap › C22 - Metallurgy; Ferrous or non-ferrous alloys; Treatment of alloys or non-ferrous metals › C22C - Alloys › C22C 38 - Ferrous alloys, e.g. steel alloys
Patents for C22C 38 - Ferrous alloys, e.g. steel alloys (43,120)
01/1990
01/09/1990US4892702 Thickness, symmetry, steels
01/03/1990EP0349023A1 Steel for roller bearings
01/03/1990EP0348952A2 Method for manufacturing steel article having high magnetic permeability and low coercive force
01/03/1990EP0348633A1 Air-hardenable steels with a duplex bainite-martensite microstructure
01/03/1990EP0348557A1 Soft magnetic stainless steel having good cold forgeability
01/03/1990CN1038542A Permanent magnet with low temp. coefficient
01/03/1990CN1038468A Highly wear-resistant manganese steel
01/03/1990CN1038467A High-strength and high ductility non-quenched and non-tempesed steel
01/02/1990US4891080 Construction materials
01/02/1990US4891079 High saturated magnetic flux density alloy
12/1989
12/28/1989DE3920521A1 Container-eckelemente Container of corners
12/27/1989EP0348380A1 Use of an iron-base alloy in the manufacture of sintered parts with a high corrosion resistance, a high wear resistance as well as a high toughness and compression strength, especially for use in the processing of synthetic materials
12/27/1989EP0347614A1 Ruthenium bearing iron base high temperature structural alloys
12/27/1989CN1006238B Ferrous alloy
12/27/1989CN1006237B High quality positive frequence temp. coefft constant elastic alloy
12/27/1989CN1006236B Iron-manganese-aluminum chromium series diamagnetic precision resistor alloys
12/26/1989US4889567 High strength and high toughness steel bar, rod and wire and the process of producing the same
12/26/1989US4889566 Precipitating titanium in low carbon steels
12/21/1989DE3837457C1 Steel for components of plants or equipment for the conveying, storage and transport of oil or gas
12/20/1989EP0347156A2 Process for manufacturing building construction steel having excellent fire resistance and low yield ratio, and construction steel obtained thereby
12/19/1989US4888512 Surface multipolar rare earth-iron-boron rotor magnet and method of making
12/19/1989US4888068 Rare earth elements, iron, cobalt, boron alloy; sintering, annealing, controlled heating and cooling
12/14/1989WO1989012112A1 SINTERED MAGNETIC Fe-Co MATERIAL AND PROCESS FOR ITS PRODUCTION
12/13/1989EP0346293A1 Ferrous alloy for the working layer of rolling mill rolls
12/12/1989US4886710 Hardness, machinability
12/12/1989US4886640 Resistance to heat softening and abrasion
12/06/1989EP0345092A1 A method for producing a corrosion resistant rare earth- containing magnet
12/05/1989US4885214 Composite material and methods for making
11/1989
11/30/1989WO1989011549A1 PRODUCTION OF NON-ORIENTED HIGH-Si STEEL SHEET
11/29/1989EP0344018A2 Rare earth permanent magnet
11/29/1989EP0343292A1 Low thermal expansion casting alloy
11/29/1989EP0343244A1 Casting steel
11/28/1989US4883544 Process for preparation of austenitic stainless steel having excellent seawater resistance
11/28/1989CA1263259A1 High strength bolt and method of manufacturing same
11/23/1989EP0343008A2 Heat treatment of corrosion resistant steels
11/23/1989EP0342921A2 Fe-based soft magnetic alloy
11/23/1989EP0342574A1 Corrosion-resistant austenitic steel
11/23/1989EP0342492A1 Steel cord with high tensile strength and radial tires reinforced with steel cord
11/23/1989DE3840905C1 Use of a steel alloy for camshafts
11/21/1989US4882124 Alloys having excellent erosion resistance
11/21/1989US4881991 Tough, corrosion resistance
11/21/1989US4881989 Fe-base soft magnetic alloy and method of producing same
11/21/1989US4881984 Radial orientation and compaction by heating an evacuated and sealed container charged with gas-atomized particles of a rare earth metal/fe/b/ alloy
11/21/1989CA1263041A1 Nickel-chromium-molybdenum alloy
11/15/1989EP0341680A1 Steel cord and radial tires reinforced with steel cord
11/15/1989CN1037231A Low-frequency transformer
11/15/1989CN1037176A High magnetic capability accumulated neodymium praseodymium permanent magnetic alloy and the preparation technology thereof
11/14/1989US4880481 Punch and counter punch plates
11/14/1989US4880480 Wear resistance
11/14/1989US4880479 Cold drawn free-machining resulfurized and rephosphorized steel bars having controlled mechanical properties and controlled machinability
11/09/1989DE3814433A1 Roller mill and method for coating a roller
11/08/1989EP0340631A1 Low silicon high-temperature strength steel tube with improved ductility and toughness
11/08/1989CN1036993A Wear-resistant alloy
11/07/1989US4878959 Casting, hot rolling, cold working, annealing, refractory coating
11/07/1989US4878955 Heat treatment, martensite and minute austenite crystal structure
11/02/1989WO1989010620A1 Ferromagnetic materials
11/02/1989WO1989010420A1 High-strength steel having excellent hydrogen-induced crack resistance, and steel wire, steel tube and flexible fluid transport pipe made by using same
11/02/1989EP0339475A2 High-flux density, grain-oriented electrical steel sheet having highly improved watt loss characteristic and process for preparation thereof
11/02/1989EP0339474A1 Process for preparation of grain-oriented electrical steel sheet having excellent magnetic and film characteristics
11/02/1989EP0339436A1 A hard alloy particle dispersion type wear resisting sintered ferro alloy and method of forming the same
10/1989
10/31/1989CA1262514A1 Nuclear grade steels
10/26/1989DE3812459A1 Wear-resistant alloy
10/25/1989EP0338520A1 Low coefficient of expansion alloys having a thermal barrier coating
10/25/1989EP0338204A2 Hard facing alloy
10/25/1989EP0338133A2 Steels for hot working press tools
10/25/1989CN1036605A Free cutting stainless steel of calcium sulphur complex austenite
10/24/1989US4876065 Acid resistance
10/24/1989US4875933 Melting method for producing low chromium corrosion resistant and high damping capacity Fe-Mn-Al-C based alloys
10/19/1989WO1989009843A1 Oxidation resistant iron base alloy compositions
10/19/1989WO1989009841A1 Method of preparing oxidation resistant iron base alloy compositions
10/18/1989EP0337846A1 Austeno-ferritic stainless steel
10/18/1989EP0337639A1 A high carbon chromium bearing steel
10/18/1989EP0337517A1 Metal fibers obtained by bundled drawing
10/11/1989EP0336701A1 A high carbon chromium bearing steel
10/11/1989EP0336175A1 Iron-based shape-memory alloy excellent in shape-memory property, corosion resistance and high-temperature oxidation resistance
10/11/1989EP0336157A1 Iron-based shape-memory alloy excellent in shape-memory property and corrosion resistance
10/11/1989CN1036231A Bainite steel of high strength and tenacity
10/11/1989CN1036230A Spheroidal carbide-contg. wear resistant mangnese steel without thermal treatment
10/10/1989US4873150 Sprayed layer of carbon, chromium, vanadium, molybdenum, tungsten, niobium, titanium, zirconium, hafnium, iron and carbide particles
10/10/1989CA1262226A1 Method for producing steel bars having improved low temperature toughness and steel bars produced thereby
10/05/1989DE3806303C1 Use of a steel alloy
10/04/1989CN1036101A 硬磁材料 Hard magnetic material
10/04/1989CN1036044A Highly toughness maraging steel
10/04/1989CN1036043A Alloy composition and method of forming drive axle shafts
10/03/1989US4871925 High-voltage pulse generating apparatus
10/03/1989US4871511 Rocket motor casing
10/03/1989US4871268 Carburization hardened steel alloy
09/1989
09/28/1989DE3905397A1 Hard-material alloy
09/27/1989EP0334505A1 A composite material and methods for making
09/27/1989EP0334478A2 Die-upset manufacture to produce high volume fractions of RE-Fe-B type magnetically-aligned material
09/27/1989EP0334445A1 Hard magnetic material
09/27/1989EP0334224A2 Ultra-rapid annealing of nonoriented electrical steel
09/27/1989EP0334223A2 Ultra-rapid heat treatment of grain oriented electrical steel
09/27/1989CN1035854A 奥氏体不锈钢合金 Austenitic stainless steel alloys
09/27/1989CN1035853A Components and production technology of high-magnetism oriented silicon steel
09/26/1989US4870046 Catalytic exhaust systems
09/26/1989US4869758 Integrated circuits
09/26/1989CA1261651A1 Blast material for mechanical plating and continuous mechanical plating using the same
09/26/1989CA1260367A1 Method of manufacturing pressure vessel steel with high strength and toughness
09/26/1989CA1259827A1 Cold-rolled steel sheets and a method of manufacturing the same
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