| Patents for C21D 6 - Heat treatment of ferrous alloys (4,815) |
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| 01/19/1982 | US4311537 Low-cobalt Fe-Cr-Co permanent magnet alloy processing |
| 01/19/1982 | CA1116499A1 Steel having high tensile strength and excellent hydrogen-brittleness-cracking-resistance and process for producing same |
| 01/12/1982 | US4310381 Method for improving magnetic properties of metallic glass ribbon |
| 12/15/1981 | US4305764 Iron, chromium, cobalt |
| 11/25/1981 | EP0040553A1 Process for producing a dual-phase steel |
| 11/24/1981 | US4302256 Autoclaving, age-hardening |
| 11/10/1981 | CA1112138A1 Method of surface hardening stainless steel parts |
| 11/03/1981 | US4298409 Annealing for high frequency applications |
| 11/03/1981 | US4298381 For magnetic tape head |
| 10/20/1981 | US4295900 Rolled wire having a fine-grain structure |
| 09/22/1981 | US4290827 Annealing, tempering in magnetic cross-field |
| 09/22/1981 | US4290808 Metallic glass powders from glassy alloys |
| 09/17/1981 | WO1981002586A1 Method of cryogenically hardening an insert in an article,and article made thereby |
| 09/16/1981 | EP0035644A1 Magnetic amorphous metal alloys |
| 09/09/1981 | EP0035401A1 Heat treatment of steel work pieces |
| 09/09/1981 | EP0035127A1 Method of cryogenically hardening an insert in an article, and article made thereby |
| 09/08/1981 | US4288260 Method of heat treatments of amorphous alloy ribbons |
| 09/01/1981 | US4286986 With controlled amounts of niobium |
| 08/18/1981 | US4284439 Process for the production of sheet and strip from ferritic, stabilized, stainless chromium-molybdenum-nickel steels |
| 08/12/1981 | EP0033600A2 Process for producing a steel with dual-phase structure |
| 07/21/1981 | US4279668 Cobalt, chromium and iron |
| 07/08/1981 | EP0031399A2 Material for the production of stainless Alpine ski edges |
| 06/30/1981 | US4276087 Powder-metallurgy vanadium-containing tungsten-type high-speed steel |
| 06/16/1981 | US4273595 Method of preparing thermomagnetically treated magnetically anisotropic objects |
| 06/16/1981 | CA1103065A1 Well casing steel |
| 05/19/1981 | US4268325 Annealing by heat treatment in magnetic field |
| 05/19/1981 | US4268324 Fabrication of spectrally selective solar surfaces by the thermal treatment of austenitic stainless steel AISI 321 |
| 05/05/1981 | US4265684 Magnetic core comprised of low-retentivity amorphous alloy |
| 05/05/1981 | US4265682 High silicon steel thin strips and a method for producing the same |
| 04/21/1981 | US4263063 Process for stabilizing dimensions of duplex stainless steels for service at elevated temperatures |
| 04/14/1981 | US4262233 Inductors, transformers, magnetometers; stress relieving by heat treatment |
| 04/14/1981 | CA1099406A1 Reducing magnetic hysteresis losses in thin tapes of soft magnetic amorphous metal alloys |
| 03/24/1981 | US4257830 Method of manufacturing a thin ribbon of magnetic material |
| 03/24/1981 | CA1097949A1 High corrosion resistant and high strength medium cr and low ni stainless cast steel |
| 02/25/1981 | EP0024124A1 Ferritic stainless steel and process for producing it |
| 02/10/1981 | US4249969 Method of enhancing the magnetic properties of an Fea Bb Sic d amorphous alloy |
| 02/04/1981 | EP0023398A1 Manganese steels and a process of making these steels |
| 01/20/1981 | US4246049 Iron-cobalt-chromium alloy hysteresis |
| 01/20/1981 | US4246046 Splits instead of fragmenting in case of failure |
| 01/13/1981 | US4244755 By vacuum firing reduces formation of surface noduces |
| 01/07/1981 | EP0020937A1 Method of enhancing the magnetic properties of amorphous metal alloys |
| 01/06/1981 | CA1092861A1 Steels combining toughness and machinability |
| 12/16/1980 | US4239556 Sensitized stainless steel having integral normalized surface region |
| 12/10/1980 | EP0019682A1 Method for making metallic glass powder |
| 12/02/1980 | US4236946 Amorphous magnetic thin films with highly stable easy axis |
| 12/02/1980 | CA1090620A1 Heat treatment for ball bearing steel |
| 11/18/1980 | US4234360 Method of making hysteresis motor rotor using amorphous magnetic alloy ribbons |
| 10/29/1980 | EP0018096A1 Boron containing transistion metal alloys comprising a dispersion of an ultrafine crystalline metallic phase and method for making said alloys, method of making an article from a metallic glass body |
| 10/14/1980 | US4227947 Method for modifying the easy direction of magnetization of an amorphous magnetic film |
| 09/23/1980 | US4224061 Acid resistance |
| 08/26/1980 | US4219355 Iron-metalloid amorphous alloys for electromagnetic devices |
| 08/19/1980 | CA1083932A1 Process for strengthening of carbon steels |
| 08/05/1980 | US4216014 Low temperature steel alloy |
| 08/05/1980 | CA1082950A1 Dual-phase hot-rolled steel strip |
| 07/23/1980 | EP0013331A1 Method for making profiles and the use of a fine grained steel for profiles |
| 05/28/1980 | EP0011152A1 Thermal homogenization of steam generating tubing |
| 05/20/1980 | US4203782 Steel having a uni-directional lamellar martensite structure in an austenite matrix |
| 03/25/1980 | US4194932 Fe/Cr/Co Permanent magnetic alloys and method of production thereof |
| 03/04/1980 | US4191597 Heat treatment for martensite cured alloys |
| 02/20/1980 | EP0007994A1 Magnetic core made of a soft magnetic amorphous alloy |
| 02/12/1980 | US4188241 Method for producing high tensile strength, high ductility, low yield ratio hot rolled steel sheet |
| 02/05/1980 | CA1071072A1 Formable high strength low alloy steel |
| 01/29/1980 | US4186037 Thermal treatment of intermediate quenching and quick tempering through eddy currents and a device for applying said treatment to high productivity rolling plants for flat products |
| 01/22/1980 | US4184899 Pretreating in cyanide, cyanate, and sulfur-containing salt bath to prevent oxide film formation; nitriding |
| 11/27/1979 | CA1066925A1 Cast maraging steel |
| 11/20/1979 | US4174983 Fe-Cr-Co magnetic alloy processing |
| 10/30/1979 | US4172742 Alloys for a liquid metal fast breeder reactor |
| 09/25/1979 | US4168994 Thermal homogenization of steam generating tubing |
| 09/25/1979 | CA1062933A1 Method for providing strong tough metal alloys |
| 09/18/1979 | US4168190 Method for locally solution-treating stainless material |
| 08/21/1979 | US4165246 Process for the heat treatment of thick walled steel pipes |
| 08/14/1979 | CA1060283A1 Method of making an ordered alloy |
| 08/08/1979 | EP0003466A1 Process for the thermal treatment of Fe-Co-Cr alloys for permanent magnets |
| 05/15/1979 | US4154629 Process of case hardening martensitic stainless steels |
| 03/08/1979 | WO1979000100A1 A process for the production of sheet and strip from ferritic,stabilised,stainless chromium-molybdenum-nickel steels |
| 03/06/1979 | CA1049906A1 Steel sheets and strips |
| 01/16/1979 | US4134779 Iron-boron solid solution alloys having high saturation magnetization |
| 12/12/1978 | US4129461 Formable high strength low alloy steel |
| 11/28/1978 | US4127427 Aluminum-chromium-zirconium-iron alloy |
| 10/31/1978 | CA1041322A1 Fibre reinforced superalloys and process for making same |
| 10/10/1978 | US4119443 Method for manufacturing hardened machined parts |
| 09/26/1978 | US4116728 Treatment of amorphous magnetic alloys to produce a wide range of magnetic properties |
| 08/22/1978 | US4108692 Rock bit roller cutter and method therefor |
| 08/08/1978 | US4105474 Process for producing a high tension steel sheet product having an excellent low-temperature toughness with a yield point of 40 kg/mm2 or higher |
| 06/06/1978 | US4093477 Chromium, cobalt, silicon, iron |
| 06/06/1978 | US4093453 Method of making an ordered alloy |
| 05/23/1978 | US4091147 Welded steel products having low sensitivity to weld cracking and a production method thereof |
| 05/09/1978 | US4088511 Steels combining toughness and machinability |
| 05/02/1978 | US4087289 Anti-vibration steel material and a production method therefor |
| 05/02/1978 | US4087287 Strengthened, creep resistant, tantalum, niobium, molybdenum, tungsten, aluminum, chromium, oxidation resistance |
| 04/25/1978 | US4086107 Heat treatment process of high-carbon chromium-nickel heat-resistant stainless steels |
| 04/04/1978 | US4082580 Iron-nickel-molybdenum alloy having improved stability and high initial permeability |
| 04/04/1978 | US4082576 Ultra-high strength low alloy titanium bearing flat rolled steel and process for making |
| 03/28/1978 | US4081298 Heat treatment of iron-nickel-phosphorus-boron glassy metal alloys |
| 03/14/1978 | US4078949 Method for improving the surface quality of stainless steels and other chromium-bearing iron alloys |
| 02/07/1978 | US4072543 Dual-phase hot-rolled steel strip |
| 08/16/1977 | US4042421 Steels |
| 08/09/1977 | US4040872 Rapid heating, quenching, working |
| 07/26/1977 | US4038109 Three phase heat treatment of steel sheet |
| 07/05/1977 | US4033789 Method of producing a high strength steel having uniform elongation |