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| Number | Title | Issue Date |
| 8097097 | Stainless steel having a high hardness and excellent mirror-finished surface property, and method of producing the same Disclosed is a stainless steel containing, by mass, 0.05% or less carbon, 1.5 to smaller than 3.5% Si, 3.0% or less Mn, 6.0 to 12.0% Cr, 4.0 to 10.0% Ni, 10.0% or less Co, 6.0% or less Cu, 0.5 to 3.0% Ti, 0 to 2.0% Al, less than 0.4% Mo, not more than 0.01% nitrogen... | 01/17/2012 |
| 8012271 | Material for components of a gas turbine The presently described technology relates to a material for components of a gas turbine, in particular for components of a gas turbine aircraft engine, having a matrix of an iron-based alloy material, wherein the matrix of the iron-based alloy material being harden... | 09/06/2011 |
| 7931758 | Thermal mechanical treatment of ferrous alloys, and related alloys and articles A thermal mechanical treatment method includes hot working a precipitation hardening martensitic stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the thermal mechanical treatment does not include soluti... | 04/26/2011 |
| 7922836 | Ferrous abrasion resistant sliding material A ferrous abrasion resistant sliding material capable of improving seizing resistance, abrasion resistance and heat crack resistance is provided. The ferrous abrasion resistant sliding material has a martensite parent phase which forms a solid solution with carbon o... | 04/12/2011 |
| 7901519 | High strength martensitic stainless steel alloys, methods of forming the same, and articles formed therefrom A precipitation hardenable martensitic stainless steel that includes, in percent by weight, 11.0 to 12.5 percent chromium, 1.0 to 2.5 percent molybdenum, 0.15 to 0.5 percent titanium, 0.7 to 1.5 percent aluminum, 0.5 to 2.5 percent copper, 9.0 to 11.0 percent nickel... | 03/08/2011 |
| 7780798 | Medical devices including hardened alloys Medical devices, such as endoprostheses, and methods of making the devices are disclosed. The endoprostheses comprise a tubular member capable of maintaining patency of a bodily vessel. The tubular member includes a mixture of at least two compositions, where the pr... | 08/24/2010 |
| 7767038 | Low-nickel austenitic stainless steel and method for producing same A low-nickel austenitic stainless steel is provided which comprises by weight: ≦0.08% C, 4.0˜5.0% Mn, 0.7˜1.0% Si, 3.5˜4.5% Ni, 16.0˜18.0% Cr, 3.0˜3.50% Cu, ≦0.045% S, ≦0.030% P, impurity elements in the total amount of ≦0.2%, and Fe as the balance. Thi... | 08/03/2010 |
| 7531053 | Fuel cell produced using a metallic material and its method of making An inexpensive metallic material for interconnects of solid-oxide fuel cells, a fuel cell using the metallic material, and a method for producing the metallic material having excellent oxidation resistance and spalling resistance of an oxide layer, high electrical c... | 05/12/2009 |
| 7520942 | Nano-scale nitride-particle-strengthened high-temperature wrought ferritic and martensitic steels A method of making a steel composition includes the steps of: a. providing a steel composition that includes up to 15% Cr, up to 3% Mo, up to 4% W, 0.05-1% V, up to 2% Si, up to 3% Mn, up to 10% Co, up to 3% Cu, up to 5% Ni, up to ... | 04/21/2009 |
| 7513960 | Stainless steel having a high hardness and excellent mirror-finished surface property, and method of producing the same Disclosed is a stainless steel containing, by mass, 0.05% or less carbon, 1.5 to smaller than 3.5% Si, 3.0% or less Mn, 6.0 to 12.0% Cr, 4.0 to 10.0% Ni, 10.0% or less Co, 6.0% or less Cu, 0.5 to 3.0% Ti, 0 to 2.0% Al, not more than 1.0% Mo, not more than 0.01% nitr... | 04/07/2009 |
| 7494551 | Ferritic stainless steel plate with Ti and method for production thereof A Ti-containing ferritic stainless steel sheet and a manufacturing method thereof include stainless steels being formed while a refining load is decreased and having a low yield strength which exhibits superior workability. The Ti-containing ferritic stainless steel... | 02/24/2009 |
| 7396422 | Rolling bearing, material for rolling bearing, and equipment having rotating part using the rolling bearing The invention relates to a rolling bearing which provides superior noiselessness and high corrosion resistance and longer life, and is manufactured at a low cost, a material for the rolling bearing, and an instrument including a rotating portion using the rolling be... | 07/08/2008 |
| 7361236 | Martensitic stainless steel A martensitic stainless steel having a C content of 0.01 to 0.1 mass %, a Cr content of 9 to 15 mass % and a N content of not more than 0.1 mass %, wherein the maximum length of the carbides in the steel is 10 to 200 nm in the direction of the minor axis, or wherein... | 04/22/2008 |
| 7273584 | Method of manufacturing oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains An oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains can be manufactured by a method comprising mixing either element powders or alloy powders and a Y2O3 powder; subjecting the resu... | 09/25/2007 |
| 7270719 | Method for manufacturing surface hardened stainless steel with improved wear resistance and low static friction properties The invention relates to the use of PVD technique for the application of a low static friction and wear resistant coating consisting essentially of titanium nitride or a diamond-like carbon—DLC, with or without an addition of tungsten carbide, on a stainless steel... | 09/18/2007 |
| 7267730 | Ferrite stainless steel for automobile exhaust system member superior in thermal fatigue strength A ferrite stainless steel for an automobile exhaust system member superior in thermal fatigue strength comprised of, by wt %, C: 0.020% or less, Si: 0.02 to 0.15%, Mn: 0.05 to 0.20%, P: 0.040% or less, S: 0.010% or less, Al: 0.005 to 0.10%, N: 0.020% or less, Cr: 15... | 09/11/2007 |
| 7258752 | Wrought stainless steel compositions having engineered microstructures for improved heat resistance A wrought stainless steel alloy composition includes 12% to 25% Cr, 8% to 25% Ni, 0.05% to 1% Nb, 0.05% to 10% Mn, 0.02% to 0.15% C, 0.02% to 0.5% N, with the balance iron, the composition having the capability of developing an engineered microstructure at a tempera... | 08/21/2007 |
| 7211159 | Ferritic heat-resistant steel and method for production thereof A ferritic heat-resistant steel, which exhibits excellent creep characteristics even at a high temperature exceeding 600° C., comprises, on the basis of percent by weight, 1.0 to 13% of chromium, 0.1 to 8.0% of cobalt, 0.01 to 0.20% of nitrogen, 3.0% or less of nic... | 05/01/2007 |
| 7160399 | Nanocarbide precipitation strengthened ultrahigh-strength, corrosion resistant, structural steels A nanocarbide precipitation strengthened ultrahigh-strength, corrosion resistant, structural steel possesses a combination of strength and corrosion resistance comprising in combination, by weight, about: 0.1 to 0.3% carbon (C), 8 to 17% cobalt (Co), 0 to 10% nickel... | 01/09/2007 |
| 7115176 | Production process and production line for manufacturing articles from hardenable metal materials In a method of manufacturing articles (8) in hardenable metal materials, a shaped workpiece (5.1, 5.2) with closed cross-section is hardened. The hardened workpiece (5.1, 5.2) is separated into at least two parts, where each part constitutes one... | 10/03/2006 |
| 7070663 | Ferritic and martensitic stainless steels excellent in machinability A ferritic or martensitic stainless steel has the structure that Cu-enriched particles with concentration of C not less than 0.1 mass % or concentration of Sn and/or In not less than 10 mass % were dispersed in a matrix. Precipitation and dispersion of Cu-enriched p... | 07/04/2006 |
| 7014719 | Austenitic stainless steel excellent in fine blankability An austenitic stainless steel comprising (C+½N) up to 0.060 mass %, Si up to 1.0 mass %, Mn up to 5 mass %, S up to 0.003 mass %, S/Mn ratio up to 0.003, 15–20 mass % Cr, 5–12 mass % Ni, Cu up to 5 mass %, 0–3.0 mass % Mo and the balance being Fe except inevi... | 03/21/2006 |
| 6978594 | Process for the manufacture of a disintegrating roll of an open-end spinning apparatus as well as a disintegrating roll made by such a process A sawtooth wire to be laid in a groove of a shredding-element-carrier of a disintegrating roll of an open-end spinning apparatus is brought into a shape, which essentially represents that shape, which the sawtooth wire is to assume on the shredding-element carrier. ... | 12/27/2005 |
| 6939415 | Austenitic stainless steel and manufacturing method thereof An austenitic stainless steel excellect in high temperature strength and creep rupture ducitility which comprises, on the percent by mass basis, C: 0.03-0.12%, Si: 0.2-2%, Mn: 0.1-3%, P: 0.03% or less, S: 0.01% or less, Ni: more than 18% and less than 25%, Cr: more ... | 09/06/2005 |
| 6921511 | Sulphur-containing ferritic stainless steel that can be used for ferromagnetic parts Ferritic stainless steel that can be used for ferromagnetic parts, characterized in that it comprises in its composition by weight: C≦0.030% 1.0% | 07/26/2005 |
| 6921497 | Composition of matter tailoring: system I The present invention relates to new compositions of matter, particularly metals and alloys, and methods of making such compositions. The new compositions of matter exhibit long-range ordering and unique electronic character. ... | 07/26/2005 |
| 6896847 | Steel alloy plastic moulding tool and tough-hardened blank for plastic moulding tools A steel alloy has a chemical composition which contains in weight-%, 0.16-0.27 C, 0.06-0.13 N, wherein total content of C+N shall satisfy the condition, 0.3 | 05/24/2005 |
| 6893727 | Metal gasket and a material for its manufacture and a method for their manufacture This invention relates to a stainless steel gasket having markedly improved strength and fatigue properties due to precipitation strengthening. Its composition comprises C: at most 0.03%, Si: at most 1.0%, Mn: at most 2%, Cr: 16.0%-18.0%, Ni: 6.0%-8.0%, N: at most 0... | 05/17/2005 |
| 6869376 | Metal push belt and material therefor A metal push belt (1) for application in a continuous variable transmission, includes at least one endless tensile member (2), and transverse elements being provided freely moveable in the endless direction of the tensile member (2). The tensile... | 03/22/2005 |
| 6858099 | Steel material production method A method for producing a steel material having a high fatigue strength and given a uniform residual stress by a rapid treatment. A marageing steel is subjected to a cold plastic working to have a predetermined dimension, to a solution treatment for 60 minutes or mor... | 02/22/2005 |
| 6855214 | Anti-friction bearing An anti-friction bearing is provided which is low in vibration and excellent in quietness. The anti-friction bearing has rolling elements provided in inner and outer ring raceway grooves, which are made of martensitic stainless steel composed of 0.60 to 0.75 percent... | 02/15/2005 |
| 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 |
| 6811622 | Semifinished and finished products made of austenitic special steel and method for the production thereof The invention relates to semifinished and finished products made from special corrosion-resistant precipitation-hardened austenitic steel containing a large amount of intersticially dissolved nitrogen, comprising substantially smooth surfaces. The invention also rel... | 11/02/2004 |
| 6797031 | Wire-shaped product, method for its manufacturing, and wear part made of the product The invention concerns a method for the manufacturing of a wire-shaped product with high wear resistance. The characteristic feature is that a melt is prepared of a martensitic stainless chromium steel which contains in weight-% 0.6-3.0 C, max 2.0 Si max 2.0 Mn, 13-... | 09/28/2004 |
| 6763593 | Razor blade material and a razor blade Provided is a razor blade material which has excellent high hardness, high strength and high corrosion resistance. The material is made of an Fe-base alloy containing, by mass %, not less than 0.5% carbon, 9.0 to 14.0% Cr and from more than zero to 8.0% Mo, wherein ... | 07/20/2004 |
| 6746365 | Toroidal-type continuously variable transmission The toroidal-type continuously variable transmission comprises an input shaft rotatably supported, an input side disk, an output side disk, a plurality of trunnions, a plurality of power rollers, and a plurality of thrust rolling bearings 32, in which the mut... | 06/08/2004 |
| 6743305 | High-strength high-toughness precipitation-hardened steel A stainless steel alloy that exhibits both high strength and toughness as a result of having particular ranges for chemistry, tempering temperatures and grain size. The alloy is a precipitation-hardened martensitic stainless steel with an ultimate tensile strength o... | 06/01/2004 |
| 6723182 | Martensitic alloy steels having intermetallic compounds and precipitates as a substitute for cobalt A cobalt-free martensitic steel exhibiting good response to hardening and resistance to softening at high temperatures, the steel containing sub-micron and nano-structural precipitates and intermetallic compounds of silicon, nickel, aluminum, copper and manganese. | 04/20/2004 |
| 6702905 | Corrosion and wear resistant alloy An iron-based corrosion resistant and wear resistant alloy. The alloy can comprise (in weight percent) 0.005-0.5% boron, 1.2-1.8% carbon, 0.7-1.5% vanadium, 7-11% chromium, 1-3.5% niobium, 6-11% molybdenum, and the balance including iron and incidental im... | 03/09/2004 |
| 6696016 | High-chromium containing ferrite based heat resistant steel A high-Cr containing ferrite heat resistant steel having not only an excellent long-term creep strength at a high temperature exceeding 650° C., but also an improved oxidation resistance, which is based on ferritic phase and contains 13% by weight or mor... | 02/24/2004 |
