| Patents for C21D 6 - Heat treatment of ferrous alloys (4,815) |
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| 07/09/2008 | EP1942203A1 Steel product usable at low temperature and method for production thereof |
| 07/09/2008 | CN101215671A Material capable of resisting zinc solution corrosive wear and manufacturing method thereof |
| 07/03/2008 | WO2008050563A3 Frictionally press-bonded member |
| 07/03/2008 | US20080160335 Rotationally Symmetrical Hollow Body Made of a Deformable Permanently Magnetic Alloy and its Use and Production Process |
| 07/03/2008 | US20080159901 molybdenum is completely or partially replaced with double the proportion of tungsten; added titanium and/or zirconium which is/are intended to form, substantially during solidification, coarse carbides; reducing the segregated seams |
| 06/26/2008 | WO2008006346A3 Method for production of a sheet metal semi-finished product suitable for press hardening |
| 06/19/2008 | WO2008072665A1 Method for producing mold for glass molding |
| 06/19/2008 | WO2008072664A1 Method for producing mold for glass molding |
| 06/11/2008 | EP1929055A1 Method for treating a steel strip |
| 06/11/2008 | EP1929054A1 Methods for heat treating thick-walled forgings |
| 06/11/2008 | CN101198714A Method for manufacturing a stainless steel product |
| 06/11/2008 | CN100393903C Producing method of high-toughness low-alloy constructional steel |
| 06/04/2008 | EP1926837A1 Process for manufacturing cold-formed precision steel pipes |
| 06/04/2008 | EP1446512B1 Martensitic stainless steel and method for manufacturing same |
| 06/04/2008 | CN100392132C Steel for low temperature and high tenacity structure use and its production method |
| 06/04/2008 | CN100392118C Duplex stainless steels |
| 05/29/2008 | US20080121313 ferromagnetic resonator; continuously annealed with a tensile stress applied along the longitudinal ribbon axis; iron, nickel and reduced cobalt content ; identification system |
| 05/27/2008 | CA2359188C High-hardness powder metallurgy tool steel and article made therefrom |
| 05/22/2008 | WO2008059540A1 Method for construction of leather- splitting machine parts |
| 05/15/2008 | WO2008056552A1 Process for producing high-concentration carburized steel |
| 05/14/2008 | CN100387746C Quasi bainitic steel and its application in rail way industry |
| 05/13/2008 | CA2325453C Cold work steel |
| 05/08/2008 | US20080105340 Heat Treatment Method of Inlaid Pressure Vessels |
| 05/07/2008 | EP1918408A2 Martensitic free cutting stainless steel |
| 05/07/2008 | EP1918388A1 High-strength steel pipe and method of heat treatment therefor |
| 05/07/2008 | EP1740734A4 Nano-crystalline steel sheet |
| 05/06/2008 | CA2324603C Steel material and method for its manufacturing |
| 05/02/2008 | WO2008050563A2 Frictionally press-bonded member |
| 05/01/2008 | US20080099106 Alloy of cobalt, vanadium, chromium, manganese, molybdenum, silicon, aluminum, and iron; solenoid valve, fuel injector of an internal combustion engine, electric motors |
| 04/30/2008 | CN100385576C Amorphous alloys for magneto-acoustic markers by annealing processing |
| 04/30/2008 | CN100385030C Method for producing dispersed oxide reinforced ferritic steel having coarse grain structure and being excellent in high temperature creep strength |
| 04/29/2008 | CA2437658C Heat-treated steel wire for high strength spring |
| 04/29/2008 | CA2184850C A high temperature process for making an iron-nickel superalloy 706 body |
| 04/24/2008 | WO2008047806A1 Cold work die steel, die, and method for production of cold work die steel |
| 04/24/2008 | CA2667095A1 Improved processing method for the production of amorphous/nanoscale/near nanoscale steel sheet |
| 04/23/2008 | CN101166844A Tempered martensitic steel, method of producing a part from said steel and part thus obtained |
| 04/22/2008 | US7361238 to improve uniformity of oxide formation in the oxidation section of the annealing furnace; atmosphere injection jets is introduced into the oxidation section which disrupts the boundary layer, resulting in improved efficiency and uniformity of oxide formation |
| 04/22/2008 | US7361235 sufficient alpha to gamma transformation during heat treatment is ensured by suppressing the bonding of Ti with C thereby to maintain the C concentration in the matrix even when Ti is added to the oxide dispersion strengthened ferritic steel |
| 04/17/2008 | DE19934989B4 Magnetisches Verbundelement, Verfahren zum Herstellen des ferromagnetischen Teils desselben sowie Verfahren zum Herstellen des unmagnetischen Teils desselben Of the same composite magnetic element, the same method for manufacturing the ferromagnetic portion and method of manufacturing the non-magnetic portion |
| 04/15/2008 | CA2463783C Martensitic stainless steel and method for manufacturing same |
| 04/10/2008 | US20080083477 Hot-Dip Coating Method in a Zinc Bath for Strips of Iron/Carbon/Manganese Steel |
| 04/10/2008 | CA2664912A1 Microtreatment of iron-based alloy, apparatus and method therefor, and articles resulting therefrom |
| 04/02/2008 | EP1905851A1 High-carbon hot-rolled steel sheet and process for producing the same |
| 03/27/2008 | US20080073004 Improving spring properties, characterized by tensile strength and dimensional accuracy of spring elements made from a corrosion-resistant ferritic chromium steel by use of cold-working, solution-annealing, quenching, and stamping or cutting techniques |
| 03/25/2008 | CA2470258C A spectacle frame |
| 03/20/2008 | WO2008032816A1 Hot-working tool steel having excellent stiffness and high-temperature strength and method for production thereof |
| 03/20/2008 | WO2008031457A1 Method for the production of tough-at-subzero steels |
| 03/19/2008 | EP1900462A1 Process for producing rare-earth permanent magnet material |
| 03/19/2008 | CN101146917A Method of manufacturing martensitic stainless steel |
| 03/18/2008 | US7344605 Exchange spring magnet powder and a method of producing the same |
| 03/13/2008 | US20080060727 Ferrous seal sliding parts and producing method thereof |
| 03/12/2008 | EP1896624A1 Martensitic stainless steel composition, method for making a mechanical part from said steel and resulting part |
| 03/12/2008 | EP1551591A4 Seam-welded air hardenable steel tubing |
| 03/12/2008 | CN100375128C Magnetostrictive element for use in a magntomechanical surveillance system |
| 03/12/2008 | CN100374608C High-strength anti-corrosion steel plate for rail vehicle and its making method |
| 03/12/2008 | CN100374586C High-strength hot-rolled steel sheet excellent in shape fixability and method of producing the same |
| 03/11/2008 | US7341637 Overcoating with solid lubricant; cold rolling |
| 03/06/2008 | US20080053579 Ferrous alloy; high concentration of lower bainite |
| 03/06/2008 | US20080053574 comprising carbon, nitrogen, silicon, manganese, chromium, molybdenum, tungsten, vanadium, niobium, sulfur, iron; microstructure which in hardened and tempered condition contains 6-13 vol% vanadium-rich carbides, nitrides, carbonitrides; tools for shearing (cutting), blanking (punching), threading |
| 03/05/2008 | EP1893781A1 Method for manufacturing a stainless steel product |
| 03/05/2008 | EP1391528B1 Ferritic stainless steal and martensitic stainless steel both being excellent in machinability |
| 03/05/2008 | CN100372962C Superhigh strength steel plate with yield strength more than 1100Mpa and method for producing same |
| 02/28/2008 | US20080047632 Method for Thermally Treating a Component Consisting of a Fully Hardenable, Heat-Resistant Steel and a Component Consisting of Said Steel |
| 02/27/2008 | CN100371488C Crankshaft |
| 02/21/2008 | WO2008020602A1 Stainless steel member for fuel cell |
| 02/21/2008 | WO2008020601A1 Coil spring for fuel cell |
| 02/21/2008 | US20080041505 Continuous process for production of steel part with regions of different ductility |
| 02/20/2008 | EP1890301A1 Method for producing rare earth permanent magnet material |
| 02/20/2008 | EP1888801A1 Razor blades and compositions and processes for the production of razor blades |
| 02/20/2008 | CN101125473A Hot-dip galvanized thin steel sheet, thin steel sheet processed by hot-dip galvanized layer, and a method of producing the same |
| 02/20/2008 | CN101125472A Hot-dip galvanized thin steel sheet, thin steel sheet processed by hot-dip galvanized layer, and a method of producing the same |
| 02/20/2008 | CN100370049C Ferritic stainless steel having high temperature creep resistance |
| 02/20/2008 | CN100369681C Compound high speed steel roll and its making process |
| 02/19/2008 | CA2308794C Tin-bearing free-machining steel |
| 02/14/2008 | US20080035248 metal working; hot-rolled and cold-rolled steel; high mechanical properties, use in manufacture of structural or reinforcing elements or external parts for automotive field |
| 02/13/2008 | CN100368579C High-strength martensitic stainless steel with excellent resistances to carbon dioxide gas corrosion and sulfide stress corrosion cracking |
| 02/07/2008 | WO2008016158A1 Free-cutting stainless steel and process for producing the same |
| 02/06/2008 | EP1884573A1 Steel manufacturing process and steel obtained using this process |
| 02/06/2008 | CN100366758C New technology for nodular cast iron crankshaft isothermal hardening |
| 02/06/2008 | CN100366363C Methods for producing raw material alloy for rare earth magnet, powder and sintered magnet |
| 02/05/2008 | CA2304474C Metallic glass alloys for mechanically resonant marker surveillance systems |
| 01/30/2008 | EP1361289B1 High strength spring made of heat-treated steel wire |
| 01/29/2008 | US7323070 ultralow carbon-Ni steel or ultralow carbon-Ni Co steel; strengthened by precipitation intermetallic compounds of Ti or Mo, etc. on a matrix of tough martensite |
| 01/23/2008 | EP1880782A2 A method for evaluating a raw alloy for a magnet |
| 01/23/2008 | EP1432841B1 Method for heat-treating work pieces made of temperature-resistant steels |
| 01/23/2008 | CN101111622A Austenitic steel having high strenght and formability method of producing said steel and use thereof |
| 01/23/2008 | CN100363524C Anticorrosion and antiwear martensitic stainless steel and its production method and use |
| 01/17/2008 | WO2008006346A2 Method for production of a sheet metal semi-finished product suitable for press hardening |
| 01/10/2008 | US20080008901 Steel Sheet Having High Young's Modulus, Hot-Dip Galvanized Steel Sheet Using The Same, Alloyed Hot-Dip Galvanized Steel Sheet, Steel Pipe Having High Young's Modulus And Methods For Manufacturing These |
| 01/09/2008 | EP1874973A2 Tempered martensitic steel, method of producing a part from said steel and part thus obtained |
| 01/09/2008 | EP1397524B1 Cold work steel |
| 01/08/2008 | CA2184960C Iron-nickel superalloy of the type in 706 |
| 01/03/2008 | US20080000560 heat treatment for generating the reverse transformed austenitic structure; metal working including hot working, cold working; desired coercive force |
| 01/03/2008 | US20080000559 Method and installation for producing hot-rolled strip from austenitic stainless steels |
| 01/02/2008 | CN100359034C 1000Mpa-grade high-strength hot-rolled anti-bullet steel plate and making method |
| 12/27/2007 | US20070295430 Maraging steel excellent in fatigue characteristics and method for producing the same |
| 12/27/2007 | DE19946327B4 Verfahren zur Senkung der Kernhärte beim Einsatzhärten nichtrostender martensitischer Stähle mit Stickstoff Methods for reducing core hardness case hardening martensitic stainless steels with nitrogen |
| 12/26/2007 | EP1668165A4 Processing for cast components |
| 12/26/2007 | CN100357476C Alloy tool steel and its producing method and mold using it |
| 12/25/2007 | US7311789 Dual phase steel strip suitable for galvanizing |