| Patents for C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment (18,654) |
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| 09/08/1989 | WO1989008152A1 Process for producing nonoriented electric steel sheet having excellent magnetic properties in lowly magnetic field |
| 09/08/1989 | WO1989008151A1 Process for producing nonoriented silicon steel sheet having excellent magnetic properties |
| 09/06/1989 | EP0331498A2 Method for providing heat resistant domain refinement of electrical steels to reduce core loss |
| 09/06/1989 | EP0331497A2 Method for improving core loss properties of electrical sheet product |
| 09/06/1989 | EP0330752A1 Superhigh-strength superfine wire, and reinforcing materials and composite materials incorporating the same |
| 09/05/1989 | US4863532 Grain-oriented electromagnetic steel sheet |
| 09/05/1989 | US4863531 Method for producing a grain-oriented electrical steel sheet having a low watt loss |
| 08/29/1989 | US4861390 Method of manufacturing formable as-rolled thin steel sheets |
| 08/24/1989 | DE3804654A1 Process for producing rolling bearing elements from a microalloyed steel |
| 08/23/1989 | EP0329611A1 Process for continuously coating a filamentary steel article by immersing the article in a bath of the molten coating metal |
| 08/23/1989 | EP0329220A1 Non-ageing low-alloy hot-rolled strip-form formable steel |
| 08/22/1989 | CA1258571A1 Method and use of steel for making steel tubes or pipes of increased acidic gas resistance |
| 08/15/1989 | US4857117 Method of manufacturing a cold-rolled steel sheet having a good deep drawability |
| 08/10/1989 | WO1989007158A1 Cold-rolled sheet or strip and process for manufacturing them |
| 08/09/1989 | EP0326912A2 Process for production of grain oriented electrical steel sheet having high flux density |
| 08/08/1989 | US4854976 With microstructure of ferrite, bainite, retained austenite; ductility, weldability, workability, light-weight; automobile bodies |
| 08/01/1989 | CA1257989A1 Strain imparting device |
| 07/25/1989 | US4851056 Process for producing a semi-processed non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density |
| 07/25/1989 | US4851054 Method of producing rolled steel having excellent resistance to sulfide stress corrosion cracking |
| 07/25/1989 | US4851052 Cooling a cast slab to produce inclusion dispersions; steels with acicular-ferrite texture |
| 07/20/1989 | DE3826091A1 High strength steel for concrete reinforcement or drawing - has high strength martensitic layer between case and core |
| 07/11/1989 | US4847046 Ultra-low temperature alloy and process for manufacturing the same |
| 07/11/1989 | US4846939 Pickling with acid |
| 07/11/1989 | US4846903 Method for producing a grain oriented electrical steel sheet |
| 07/11/1989 | US4846900 Process for the production of a compresssed gas container made of austenitic steels by cryodeformation |
| 07/11/1989 | US4846448 Apparatus for improvement of iron loss of electromagnetic steel sheet or amorphous material |
| 07/05/1989 | EP0323155A1 Method for producing low iron loss grain oriented silicon steel sheets |
| 07/05/1989 | EP0322889A2 Manufacturing method of extra fine wire |
| 07/05/1989 | EP0322463A1 Heat treatment hardenable hot rolled steel sheet having excellent cold workability and process for its production |
| 06/28/1989 | EP0321695A2 Process for production of grain oriented electrical steel sheet having high flux density |
| 06/28/1989 | EP0130221B1 Process for producing corrosion-resistant alloy steel |
| 06/27/1989 | US4842818 Coil springs for automobiles or railroad cars |
| 06/27/1989 | CA1256353A1 Method of continuous casting slabs to produce good surface quality hot-rolled band |
| 06/21/1989 | EP0320820A1 Process for preparation of austenitic stainless steel having excellent seawater resistance |
| 06/21/1989 | EP0320773A2 Process for making hot-rolled clad steel sheet |
| 06/14/1989 | EP0320003A1 Method of producing steel having a low yield ratio |
| 06/14/1989 | EP0319590A1 HIGH-STRENGTH, COLD-ROLLED STEEL SHEET HAVING HIGH r VALUE AND PROCESS FOR ITS PRODUCTION |
| 06/13/1989 | US4838955 Thermal aftertreatment with free nitrogen |
| 06/06/1989 | US4836866 Quenching stretched heated tensioned metal bars |
| 06/01/1989 | DE3836534A1 Process for the manufacture of steel products by hot-forming |
| 05/31/1989 | EP0318051A2 Process for production of double-oriented electrical steel sheet having high flux density |
| 05/30/1989 | US4834808 Producing a weldable, ferritic stainless steel strip |
| 05/24/1989 | CN1033078A Process of ferro-manganese alloy manufacturing for internal rotor of hysteresis motor |
| 05/23/1989 | US4832762 Method for producing thin steel sheet of high magnetic permeability |
| 05/23/1989 | US4832757 Pumps, carbon, manganese, molybdenum steels |
| 05/23/1989 | CA1254492A1 Process for producing electrical steel sheet |
| 05/17/1989 | EP0315948A2 Process for preparation of thin grain oriented electrical steel sheet having excellent iron loss and high flux density |
| 05/17/1989 | EP0315787A1 Improving fatigue life of component such as a bar |
| 05/16/1989 | US4830686 Low yield ratio high-strength annealed steel sheet having good ductility and resistance to secondary cold-work embrittlement |
| 05/16/1989 | US4830683 Apparatus for forming variable strength materials through rapid deformation and methods for use therein |
| 05/16/1989 | CA1254062A1 Manufacturing process of martensitic stainless steel machine bars or wires and the like |
| 05/10/1989 | EP0315576A1 Procedure for the fabrication of cladstell plates |
| 05/03/1989 | EP0314667A1 Process and apparatus for manufacturing thin wires, rods, pipes or sections made of steels or alloys with a low deformability, particularly of hardenable steels |
| 05/03/1989 | EP0314649A2 Ferritic-martensitic stainless steel alloy with deformation-induced martensitic phase |
| 05/03/1989 | EP0314145A1 Method for manufacturing steel article having high toughness and high strength |
| 05/03/1989 | EP0314144A1 Method for manufacturing steel article having high toughness and high strength |
| 05/02/1989 | US4826543 Of carbon, manganese, nickel, molybdenum, aluminum and iron, hot rolling, quenching, tempering |
| 05/02/1989 | US4826542 Temperature control |
| 05/02/1989 | US4826138 Apparatus for heat treating steel plates |
| 04/26/1989 | EP0313225A2 Grain size control of a metal powder product |
| 04/26/1989 | EP0312883A1 Processing electrical steels |
| 04/26/1989 | CN1032556A Hot rolled steel sheet, and process for manufacturing it |
| 04/25/1989 | US4824493 Process for producing a grain-oriented electrical steel sheet having improved magnetic properties |
| 04/25/1989 | US4824491 Process for the production of a strip of a chromium stainless steel of a duplex structure having high strength and elongation as well as reduced plane anisotropy |
| 04/25/1989 | CA1253055A1 Method for producing high strength steel excellent in properties after warm working |
| 04/19/1989 | EP0312054A1 Free-cutting steel having high fatigue strength |
| 04/11/1989 | US4820357 Low grade material axle shaft |
| 04/06/1989 | WO1989002936A1 Die-less drawing method and apparatus |
| 04/06/1989 | DE3803064C1 Cold-rolled sheet or strip, and process for its manufacture |
| 04/04/1989 | US4818299 Bake hardenable, titanium-containing |
| 04/04/1989 | CA1251952A1 Steel materials for welded structures |
| 03/29/1989 | EP0308751A1 Hot rolled steel sheet having high resistances against secondary-work embrittlement and brazing embrittlement and adapted for ultra-deep drawing and a method for producing the same |
| 03/29/1989 | EP0308496A1 Apparatus and methods for forming variable strength materials through rapid deformation. |
| 03/22/1989 | EP0307905A2 Method for producing grainoriented electrical steel sheet with very high magnetic flux density |
| 03/15/1989 | EP0307163A1 Silicon steel sheets having low iron loss and method of producing the same |
| 03/15/1989 | EP0306609A2 Process for producing a half-finished or finished product from single-phase martensitic high alloy chromium steel by hot and/or cold forming |
| 03/15/1989 | EP0306578A1 Ferritic stainless steel and process for producing |
| 03/15/1989 | CN1031724A Process for treatment of increasing corrosion resistance of rolled steel |
| 03/14/1989 | US4812181 Method of achieving a flat magnetization loop in amorphous cores by heat treatment |
| 03/14/1989 | US4812177 Hot working method for producing a superplastic ferrous duplex-phase alloy |
| 03/14/1989 | US4812176 Hot and cold rolling |
| 03/08/1989 | EP0306076A1 Method and apparatus for the manufacture of formable steel strip |
| 03/08/1989 | EP0305966A1 Method for producing grain-oriented electrical steel sheet having metallic luster and excellent punching property |
| 03/08/1989 | EP0305914A2 Process for the treatment of rolled steel for increasing corrosion resistance |
| 03/07/1989 | US4810593 High-strength conductors and process for manufacturing same |
| 03/07/1989 | US4810589 Steel foil having excellent shielding characteristics to electromagnetic waves |
| 03/01/1989 | EP0305038A2 Method of annealing an aperture shadow mask for a colour cathode ray tube |
| 03/01/1989 | EP0304740A2 Processing grain oriented electrical steel |
| 02/21/1989 | US4806176 Precipitation of aluminum nitride, annealing, hot & cold rolling |
| 02/16/1989 | DE3801621C1 Process for producing thick-walled longitudinally seam-welded steel pipes |
| 02/15/1989 | EP0303041A2 Oil-quenched and tempered hard drawn steel wire with a shaped section, and process for producing the same |
| 02/15/1989 | EP0303016A1 Method of making a gas pressure vessel of austenitic stainless steel by cryogenic forming |
| 02/15/1989 | EP0302947A1 Rare earth element-iron base permanent magnet and process for its production |
| 02/14/1989 | CA1249958A1 Production of formable thin steel sheet excellent in ridging resistance |
| 02/09/1989 | WO1989001051A1 Method and apparatus for forming bainite |
| 02/08/1989 | EP0302639A2 Grain oriented electromagnetic steel sheets having a very low iron loss and method of producing the same |
| 02/07/1989 | CA1249764A1 Grain-oriented electrical steel sheet having a low watt loss and method for producing same |
| 02/01/1989 | EP0301228A1 Process for producing hot-rolled strip |
| 01/31/1989 | US4801341 One-sided enamelable hot-rolled steel sheet and process for producing the same |
| 01/31/1989 | US4800744 Production of a taper rod |