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| Number | Title | Issue Date |
| 7597841 | Weld metal excellent in toughness and SR cracking resistance Provided is a weld metal for Cr—Mo steels which is suppressed in the formation of ferrite bands and therefore has heightened toughness and tensile strength and at the same time, good SR cracking resistance. The weld metal according to the present invention ... | 10/06/2009 |
| 7361237 | High-strength isotropic steel, method for making steel plates and resulting plates A steel having a composition, expressed in wt. %, of: 0.03≦C≦0.06; 0.50≦Mn≦1.10; 0.08≦Si≦0.20; 0.015≦Al≦0.070; N≦0.007; Ni≦0.040; Cu≦0.040; P≦0.035; S≦0.015; Mo≦0.008; Ti≦0.005; and boron in an amount such that: 0.65≦B/N≦1.60, the r... | 04/22/2008 |
| 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 |
| 7331757 | Turbine shaft and production of a turbine shaft The invention relates to a turbine shaft for a steam turbine, oriented in an axial direction and comprising a first and a second flow region. According to the invention, a first material is provided in the first flow region of the turbine shaft, and a second flow re... | 02/19/2008 |
| 7316143 | Seamless steel tubes and method for producing the same A seamless steel tube comprising, in mass %, C: 0.30 to 0.50%, Si: 0.5% or less, Mn: 0.3 to 2.0%, P: 0.025% or less, S: 0.005% or less, Cr: 0.15 to 1.0%, Al: 0.001 to 0.05%, Ti: 0.005 to 0.05%, N: 0.02% or less, B: 0.0005 to 0.01% and O (oxygen): 0.0050% or less, wh... | 01/08/2008 |
| 7264684 | Steel for steel pipes A steel for steel pipes which comprises, on the percent by mass basis, C: 0.2 to 0.7%, Si: 0.01 to 0.8%, Mn: 0.1 to 1.5%, S: 0.005% or less, P: 0.03% or less, Al: 0.0005 to 0.1%, Ti: 0.005 to 0.05%, Ca: 0.0004 to 0.005%, N: 0.007% or less, Cr: 0.1 to 1.5%, Mo: 0.2 t... | 09/04/2007 |
| 7249638 | Impact wrench anvil and method of forming an impact wrench anvil An anvil adapted to be received within an impact wrench comprises a round body and a square head. The square head is formed at an end of the round body. A tapered ramp extends from the round body to the square head. A radius is formed in the tapered ramp. ... | 07/31/2007 |
| 7229507 | High speed tool steel A high speed tool steel, which is high in impact value and free from variations in tool performance, comprising, by mass %, of: 0.4≦C≧0.9; Si≦1.0; Mn≦1.0; 4≦Cr≧6; 1.5–6 in total of either or both of W and Mo in the form of (½W+Mo) wherein W≦3; 0.5â€... | 06/12/2007 |
| 7170073 | Stainless steel product containing B and method for production thereof A stainless steel slab containing B, wherein a protecting material is joined onto at least two faces across the bloom from each other in a stainless steel bloom containing B of 0.3–2.5 mass %, being integrated into one-piece by forming a weld metal comprising a st... | 01/30/2007 |
| 7128791 | Heat-resistant martensite alloy excellent in high-temperature creep rupture strength and ductility and process for producing the same The present invention provides a martensitic heat resistant alloy having a composition (A) comprising, % by weight: 0.03 to 0.15% of C; 0.01 to 0.9% of Si: 0.01 to 1.5% of Mn; 8.0 to 13.0% of Cr; 0.0005 to 0.015% of Al; no more than 2.0% of Mo; no more than 4.0% of ... | 10/31/2006 |
| 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 |
| 7048811 | Electric resistance-welded steel pipe for hollow stabilizer The present invention provides an electric resistance welded steel pipe for a hollow stabilizer excellent in workability, which steel pipe contains, in mass, 0.20 to 0.35% of C, 0.10 to 0.50% of Si, 0.30 to 1.00% of Mn, 0.01 to 0.10% of Al, 0.10 to 1.00% of Cr, 0.00... | 05/23/2006 |
| 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 |
| 6689312 | Alloy composition and improvements in mold components used in the production of glass containers An alloy and article of manufacture including parts of glass container manufacturing apparatus such as a mold and plunger having a composition which consists of Carbon 0.1 to 0.5%, preferably 0.2 to 0.3% Silicon 0 to 2% preferably 0.5 to 1.5% Manganese 0 to 2%... | 02/10/2004 |
| 6645320 | Steel sheet excellent in ductility and strength stability after heat treatment There is provided a steel sheet which can simultaneously achieves the following objects: high strength is obtained by quenching with reliability; and excellent ductility is ensured, and further which is excellent in corrosion resistance, plating propertie... | 11/11/2003 |
| 6436163 | Metal filter for high temperature applications A porous metal filter possessing enhanced anticorrosive properties is provided including sintered metal particles composed of an alloy composition of iron aluminide having a range in concentration corresponding to Fe3 Al to FeAl phases and havi... | 08/20/2002 |
| 6379611 | High strength, low alloy, heat resistant steel A high strength, low alloy, heat resistant steel having excellent weldability has an average crystal grain diameter of at most 110 μm and consists essentially of, by mass %: C: 0.03-0.15%, Si: at most 1%, Mn: at most 2%, P: at most 0.03%, S: at most 0.03... | 04/30/2002 |
| 6358336 | Heat resistance Cr-Mo alloy steel A heat-resistant steel contains 0.1-3 mass % of Cr and satisfies the following equation: 0.1ࣘNb+Mo+V and MX-type complex precipitates formed inside microcrystalline grains contain 30 mass % or more of Mo and 7 mass % or more of Nb. Also provided is a pr... | 03/19/2002 |
| 6290904 | Welding materials for high-Cr steels This invention relates to welding materials for high-Cr steels which exhibit higher toughness and improved creep characteristics. Specifically, this invention relates to a welding material for high-Cr steels which contains, on a weight percentage basis, 0... | 09/18/2001 |
| 6254697 | Cast steel material for pressure vessels and method of making a pressure vessel by using same The present invention provides a cast steel material for pressure vessels which has improved impact resistance (weldability) and toughness while maintaining its creep rupture strength at a level equal to or higher than the excellent creep rupture strength... | 07/03/2001 |
| 6228183 | Ultra-high strength, weldable, boron-containing steels with superior toughness An ultra-high strength boron-containing steel having a tensile strength of at least about 900 MPa (130 ksi), a toughness as measured by Charpy V-notch impact test at -40° C. (-40° F.) of at least about 120 joules (90 ft-lbs), and a microstructure compri... | 05/08/2001 |
| 6224825 | Case hardening steel A case hardening steel with a minimum of grain boundary oxidation, suitable for use in the manufacture of mechanical elements with high demands on fatigue resistance and wear resistance, comprising, in % by weight: C 0.12... | 05/01/2001 |
| 6187113 | Steel alloy for manufacturing bumpers for motor vehicles A steel alloy for pipes, sheet metal or sections for manufacturing bumpers for motor vehicles, wherein the steel alloy contains, in percent by weight, 0.17 to 0.20% carbon, 1.70 to 2.20% manganese, 0.45 to 0.75% chromium, 0.10 to 0.35% molybdenum, 0.03 to... | 02/13/2001 |
| 6136266 | Soft, low carbon steel alloy with increased deformability for structural reinforcement parts of motor vehicles A steel alloy for pipes, sheet metal or sections for manufacturing body reinforcements for motor vehicles, particularly side impact beams or A- and B-column reinforcements, wherein the steel alloy contains in percent by weight 0.1 to 0.17% carbon, 2.0 to ... | 10/24/2000 |
| 6126897 | Carburizing steel and steel products manufactured making use of the carburizing steel A carburizing steel having the following chemical composition: C: 0.1 to 0.25%, Si: 0.2 to 0.4%, Mn: 0.3 to 0.9%, P: 0.02% or less, S: 0.001 to 0.15%, Cr: 0.5 to 0.9%, Mo: 0.15 to 1%, Al: 0.01 to 0.1%, B: 0.0005 to 0.009%, N: less than 0.006%, and the balance of Fe and ... | 10/03/2000 |
| 6095756 | High-CR precision casting materials and turbine blades This invention relates to high-Cr precision casting materials containing carbon, silicon, manganese, chromium, nickel, vanadium, niobium, nitrogen, molybdenum, tungsten, cobalt and optionally boron in specific weight proportions, the balance being iron an... | 08/01/2000 |
| 5961284 | High strength heat resisting cast steel, steam turbine casing, steam turbine power plant and steam turbine A steam turbine has main components such as rotor shaft exposed to high temperature and intermediate pressure, which are made of a ferritic steel and the main steam temperature and the re-heat steam temperature are 610° C. to 660° C., and a steam turbin... | 10/05/1999 |
| 5945064 | Welding material for low chromium (Cr) ferritic steel having high toughness This invention provides a welding material for low chromium (Cr) ferritic heat-resisting steel having high toughness, wherein the chemical composition of welding metal comprises, in weight %, carbon (c) 0.04-0.1%, silicon (Si) 0.1-0.6%, manganese (Mn) 0.1... | 08/31/1999 |
| 5928442 | Medium/high carbon low alloy steel for warm/cold forming A medium/high carbon low alloy steel which can be cold formed by cold or warm forging and heat treated. The material consists essentially of: ______________________________________ Element Weight Percent _______________________________... | 07/27/1999 |
| 5919415 | Steel and process for the manufacture of a steel component formed by cold plastic deformation The invention relates to a steel and to a process for the manufacture of a steel component formed by cold plastic deformation.... | 07/06/1999 |
| 5855845 | Low alloy steel for the manufacture of molds for plastics Steel for the manufacture of molds for injection molding of plastics, wherein its chemical composition contains, by weight: 0.35%ࣘCࣘ0.5%, 0%ࣘSiࣘ0.5%, 0.2%ࣘMnࣘ2.5%, 0%ࣘNiࣘ4%, 0%ࣘCrࣘ4%, 0%ࣘMo+W/2ࣘ2%, 0%ࣘCuࣘ1%, 0%ࣘV+Nb... | 01/05/1999 |
| 5855846 | Steel repairable by welding for the manufacture of molds for plastics Steel for the manufacture of molds, and especially of molds for injection molding of plastics, whose chemical composition comprises, by weight: 0.17%ࣘCࣘ0.27%, 0%ࣘSiࣘ0.5%, 0%ࣘMnࣘ2%, 0%ࣘNiࣘ2%, 0%ࣘCrࣘ3%, 0%ࣘMo+W/2ࣘ1.5%, 0%ࣘV+Nb... | 01/05/1999 |
| 5814274 | Low-Cr ferritic steels and low-Cr ferritic cast steels having excellent high teperature strength and weldability This invention provides low-Cr ferritic steels and low-Cr ferritic cast steels having excellent high-temperature strength and weldability. These low-Cr ferritic steels and low-Cr ferritic cast steels consist essentially of, on a weight percentage basis, 0... | 09/29/1998 |
| 5762725 | Steel for the manufacture of forging having a bainitic structure and process for manufacturing a forging Steel for the manufacture of forgings having a bainitic structure and the mechanical properties of which are: Rp0.2 ࣙ800 MPa, Rm ࣙ1000 MPa, Kcu ࣙ50 J/cm2 its chemical composition comprising, by weight: 0.0... | 06/09/1998 |
| 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 |
| 5645794 | Low alloy steel for the manufacture of molds for plastics and for rubber Low alloy steel for the manufacture of molds for plastics or for rubber, the chemical composition of which comprises, by weight, 0.24% to 0.35% of carbon, 1% to 2.5% of manganese, 0.3% to 2.5% of chromium, 0.1% to 0.8% of molybdenum plus tungsten divided ... | 07/08/1997 |
| 5605559 | Alloy steel powders, sintered bodies and method Alloy steel powders capable of obtaining high strength in a sintered state and having excellent compacting compressibility and methods of manufacturing a sintered body. The alloy steel powder comprises, by wt %, about 0.5-2% of Cr, not greater than about ... | 02/25/1997 |
| 5407635 | Low-chromium ferritic heat-resistant steel with improved toughness and creep strength A low-Cr ferritic steel with improved toughness as well as creep strength is disclosed, which consists essentially of, by weight %: C: 0.03-0.12%, Si: 0.70% or less, Mn: 0.10-1.50%, Ni: 2.0% or less, Cr: 1.50-3.50%, W: 1.0-3.0%, V: 0.10-0.35%, Nb: 0.01-0.10%, B: 0.... | 04/18/1995 |
| 5211909 | Low-alloy heat-resistant steel having improved creep strength and toughness A low-alloy steel consists essentially, on a weight basis, of: C: 0.03-0.12%, Si: at most 0.7%, Mn: 0.1-1.5%, Ni: at most 0.8%, P: at most 0.03%, S: at most 0.015%, Cr: 1.5-3.5%, W: 1-3%, V: 0.1-0.35%, Nb: 0.01-0.1%, B: 0.0001-0.02%, N: less than 0.005%, ... | 05/18/1993 |
| 5186768 | Flat spring hose clamp and manufacture of same A flat spring hose clamp having an improved resistance to brittle fracture and a method for manufacturing the same are disclosed, the hose clamp being made of a steel having a steel composition consisting essentially of, by weight %: C:0.30-0.70%, Si: 0.7... | 02/16/1993 |
