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| Number | Title | Issue Date |
| 7537727 | Eglin steel—a low alloy high strength composition The present invention relates to a low alloy, low to medium carbon content, high strength, and high ductility steel composition. The present invention contains relatively low nickel content, yet exhibits high performance characteristics and is manufactured at a subs... | 05/26/2009 |
| 7357060 | Vehicle armor A vehicle is armored the steps of sequentially making a steel plate with a thickness of 4 mm to 15 mm of by weight | 04/15/2008 |
| 7074286 | Wrought Cr—W—V bainitic/ferritic steel compositions A high-strength, high-toughness steel alloy includes, generally, about 2.5% to about 4% chromium, about 1.5% to about 3.5% tungsten, about 0.1% to about 0.5% vanadium, and about 0.05% to 0.25% carbon with the balance iron, wherein the percentages are by total weight... | 07/11/2006 |
| 6942741 | Iron alloy strip for voice coil motor magnetic circuits An iron alloy strip having a gage of 0.1 to 5 mm and a magnetic field strength variation within the strip of 0 to 10 Hz, made of an iron alloy consisting essentially of, in % by weight, 0.0001-0.02% of C, 0.0001-5% of Si, 0.001-0.2% of Mn, 0.0001-0.05% of P, 0.0001-... | 09/13/2005 |
| 6841122 | Hot working die steel excelling in molten corrosion resistance and strength at elevated temperature and member for high temperature use formed of the hot working die steel A hot working die steel contains 0.05-0.25% C, 0.30% or less Si, 0.03% or less Mn, 1.0% or less Ni, 5.0-13.0 % Cr, 2.0% or less Mo, 1.0-8.0% W, 1.0-10.0% Co, 0.003-0.020% B, 0.005-0.050% N, and the balance consisting essentially of Fe and unavoidable impurities. If ... | 01/11/2005 |
| 6821360 | Heat-resisting steel, method for thermally treating heat-resisting steel, and components made of heat-resisting steel A heat-resisting steel comprising 0.15-0.30 wt. % C, 0.05-0.3 wt. % Si, 0.01-0.7 wt. % Mn, 1.8-2.5 wt. % Cr, 0.15-0.23 wt. % V, 1.5-2.5 wt. % W, 0.01-0.02 wt. % Ti, 0.01-0.08 wt. % Nb, 0.005-0.03 wt. % N, 0.001-0.015 wt. % B, and Fe and unavoidable impurities as the... | 11/23/2004 |
| 6482354 | High-hardness powder metallurgy tool steel and article made therefrom A tool steel alloy having a unique combination of hardness and toughness is disclosed. The alloy contains, in weight percent, about: wt. % C 1.85-2.30, Mn 0.15-1.0, Si 0.15-1.0, P 0.030 max., S 0-0.30, Cr 3.7-5.0, Ni+Cu 0.75 max., Mo 1.0 max., Co 6-12, W ... | 11/19/2002 |
| 6096262 | Martensitic heat resisting steel A martensitic heat resisting steel having improved heat resistance, which consists by weight percentage of 0.35%ࣘCࣘ0.60%, 1.0%ࣘSiࣘ2.5%, 0.1%ࣘMn | 08/01/2000 |
| 6057045 | High-speed steel article A powder-metallurgy produced high-speed steel article having a combination of high hardness and wear resistance, particularly at elevated temperatures. This combination of properties is achieved by the combination of W, Mo, V, and Co. The article is parti... | 05/02/2000 |
| 5830287 | Wear resistant, powder metallurgy cold work tool steel articles having high impact toughness and a method for producing the same A hot-worked, fully dense, wear resistant, vanadium-rich, powder metallurgy cold work tool steel article having improved impact toughness. This is achieved by controlling the amount, composition and size of the primary carbides and by insuring that substa... | 11/03/1998 |
| 5817191 | Iron-based soft magnetic alloy containing cobalt for use as a solenoid core An iron-based, cobalt-containing soft magnetic alloy suitable for use as a core in a magnetic switch or other exciting circuits has a cobalt content of 6 through 30 weight percent, at least one of the elements chromium, molybdenum, vanadium and tungsten i... | 10/06/1998 |
| 5753005 | Source powder for wear-resistant sintered material A source powder for a wear-resistant sintered material, consisting essentially of, in weight percentages, Cr: 3.0 to 6.0%, 2 Mo+W: 10.0 to 20.0%, V: 1.0 to 8.0%, Co: 10.0% or below, C: 0.20% to {0.01(2 Mo+W)+0.24 V}%, Si: 0.1 to 1.0%, Mn: 0.1 to 1.0% and ... | 05/19/1998 |
| 5746843 | Low Mn-low Cr ferritic heat resistant steel excellent in strength at elevated temperatures A low Mn-low Cr ferritic heat resistant steel consisting essentially of, in weight %: 0.02-0.20% C, up to 0.7% Si, less than 0.1% Mn, up to 0.8% Ni, 0.8-3.5% Cr, 0.01-3.0% W, 0.1-0.5% V, 0.01-0.20% Nb, 0.001-0.05% Al, 0.0005-0.05% Mg, 0.0005-0.01% B, less... | 05/05/1998 |
| 5456770 | Amorphous magnetic alloy with high magnetic flux density An amorphous magnetic alloy of a composition represented by Fea Sib Bc Snx, where 60 | 10/10/1995 |
| 5201965 | Heat-resistant cast steel, method of producing same, and exhaust equipment member made thereof A heat-resistant cast steel having a metal matrix substantially consisting of a ferrite phase and a pearlitic-colony phase has a composition consisting essentially, by weight, of C: 0.05-0.25%, Si:2.5-3.5%, Mn:2% or less, Cr:4-8%, N:0.05% or less, and Fe ... | 04/13/1993 |
| 5032356 | High fatigue strength metal band saw backing material A high fatigue strength metal band saw backing material of the present invention comprises 0.27 to 0.40% of C, not more than 0.35% of Si, 0.3 to 1.2% of Mn, 0.45 to 0.75% of Ni, more than 3.0% to 4.5% of Cr, 1.5 to 2.3% of one or two of Mo and W in terms ... | 07/16/1991 |
| 4729872 | Isotropic tool steel Isotropic tool steel consisting essentially of necessary elements as tool steel, less than 0.005 weight % of S and less than 30 ppm of O, the balance being substantially Fe. The necessary elements are, by weight, 0.10-0.70% of C, 2.00% or less of Si, 2.00... | 03/08/1988 |
| 4533406 | Minimum activation martensitic alloys for surface disposal after exposure to neutron flux Steel alloys for long-term exposure to neutron flux have a martensitic microstructure and contain chromium, carbon, tungsten, vanadium and preferably titanium. Activation of the steel is held to within acceptable limits for eventual surface disposal by st... | 08/06/1985 |
| 4459162 | Hot work steel A hot work steel with very high resistance to tempering and a very high strength at elevated temperatures, a good ductility and a comparatively low content of expensive alloying elements; the steel contains in weight percent: 0.30-0.45 C, 0.2-1.0 Si, 0.3-... | 07/10/1984 |
| 4232096 | Composite steel material and composite steel tool made from this material A composite steel material consisting of two metallically joined steel components having different chemical compositions is disclosed. The first component is a high-speed tool steel or other high alloy tool steel having a carbon activity and a hardness an... | 11/04/1980 |
| 4224060 | Hard alloys This invention relates to hard alloys with a chemical composition by weight of 0.7 to 1.5% carbon; 0.1 to 1.0% silicon; 0.15 to 0.50% manganese; 0.03% maximum phosphorus; 0.20% maximum sulphur; 3.5 to 6.0% chromium; 0 to 10% molybdenum; 0 to 10% tungsten;... | 09/23/1980 |
| 3954454 | Temper embrittlement free low alloy steel A low alloy rotor steel is described which is substantially free of temper embrittlement within given constraints. In addition to describing the chemical composition there is included equations for predetermining the fracture appearance transition tempera... | 05/04/1976 |
