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| Number | Title | Issue Date |
| 8003045 | Cast, heat-resistant austenitic stainless steels having reduced alloying element content A cast, austenitic steel composed essentially of, expressed in weight percent of the total composition, about 0.4 to about 0.7 C, about 20 to about 30 Cr, about 20 to about 30 Ni, about 0.5 to about 1 Mn, about 0.6 to about 2 Si, about 0.05 to about 1 Nb, about 0.05... | 08/23/2011 |
| 7815848 | Corrosion resistant alloy and components made therefrom A corrosion resistant alloy is provided which includes, in percent by weight: (a) 16 to 24% Ni; (b) 18 to 26% Cr; (c) 1.5 to 3.5% Mo; (d) 0.5 to 1.5% Si; (e) 0.001 to 1.5% Nb; (f) 0.0005 to 0.5% Zr; (g) 0.01 to 0.6% N; (h) 0.001 to 0.2% Al; (j) less than 0.2% Ti; an... | 10/19/2010 |
| 7749432 | Cast, heat-resistant austenitic stainless steels having reduced alloying element content A cast, austenitic steel composed essentially of, expressed in weight percent of the total composition, about 0.4 to about 0.7 C, about 20 to about 30 Cr, about 20 to about 30 Ni, about 0.5 to about 1 Mn, about 0.6 to about 2 Si, about 0.05 to about 1 Nb, about 0.05... | 07/06/2010 |
| 7118636 | Precipitation-strengthened nickel-iron-chromium alloy An Fe—Ni—Cr alloy formulated to contain a strengthening phase that is able to maintain a fine grain structure during forging and high temperature processing of the alloy. The alloy contains a sufficient amount of titanium, zirconium, carbon and nitrogen so that ... | 10/10/2006 |
| 7014720 | Austenitic stainless steel tube excellent in steam oxidation resistance and a manufacturing method thereof The present invention provides an austenitic stainless steel tube with a uniform fine grained structure of regular grains, which is not changed to a coarse structure and the steam oxidation resistance is maintained even if the tube is subjected to a high temperature... | 03/21/2006 |
| 6935529 | Stainless steel fuel tank for automobile A fuel tank for a motor vehicle is fabricated from an austenitic stainless steel sheet having elongation of 50% or more after fracture by a uniaxial stretching test with a work-hardening coefficient of 4000 N/mm2 or a ferritic stainless steel sheet having... | 08/30/2005 |
| 6562293 | Material formulation for galvanizing equipment submerged in molten aluminum and aluminum/zinc melts An article of equipment intended to be submerged in molten zinc and low percentage aluminum/zinc melts, said article containing an alloy material comprised of carbon, chromium, nickel, tungsten, molybdenum, vanadium, niobium (columbium), cobalt, boron, ir... | 05/13/2003 |
| 6494789 | Golf club head A golf club head comprises a ball-hitting face made of a steel alloy containing maximum amounts of 0.03% of C by weight, 0.2% of Si by weight, 0.2% of Mn by weight, 0.2% of P by weight, 0.02% of S by weight, 10.5-11.0% of Cr by weight, 1.8-2.2% of Mo by w... | 12/17/2002 |
| 6485679 | Heat resistant austenitic stainless steel A heat resistant austenitic stainless steel with high strength at elevated temperatures, good steam oxidation resistance, good fire side corrosion resistance, and a sufficient structural stability, suitable for use in boilers operating at high temperature... | 11/26/2002 |
| 6352670 | Oxidation and corrosion resistant austenitic stainless steel including molybdenum An austenitic stainless steel comprising, by weight, 17 to 23% chromium, 19 to 23% nickel, 1 to 6% molybdenum. The addition of molybdenum to the iron-base alloys of the invention increases their resistance to corrosion. The austenitic stainless steel may ... | 03/05/2002 |
| 6290905 | Welding material A welding method for two members adapted to be welded and formed of a low-alloy steel for structural purposes causing the weld metal to develop martensite transformation during cooling after welding, so that the weld metal becomes expanded to a greater de... | 09/18/2001 |
| 6171547 | Austenitic stainless steel having excellent sulfuric acid corrosion resistance and excellent workability An austenitic stainless steel of the present invention has the following chemical composition based on percent by weight: C: 0.05% or less, Si: 1.0% or less, Mn: 2.0% or less, P: 0.04% or less, S: 0.01% or less, Ni: from 12 to 27%, Cr: from 15 to 26%, Cu:... | 01/09/2001 |
| 6146582 | Austenitic stainless steel with good oxidation resistance A new austenitic stainless steel alloy is provided (in wt. %) according to the following analysis: C: less than 0.12%; Si: less than 1.0%; Cr: 16-22%; Mn: less than 2.0%; Ni: 8-14%; Mo: less than 1.0%; S: less than 0.03%; O: less than 0.03%; N: less than 0.05%; La:... | 11/14/2000 |
| 6060180 | Alloy having high corrosion resistance in environment of high corrosiveness, steel pipe of the same alloy and method of manufacturing the same steel pipe The present invention provides a highly corrosion-resistant alloy used as a boiler tube in equipment the energy source of which is obtained by burning fossil fuel or waste, a steel tube for which the alloy is used, and a process for producing the steel tu... | 05/09/2000 |
| 5976275 | High-nickel austenitic stainless steel resistant to degradation by neutron irradiation The present invention aims at providing structural materials having a resistance to degradation by neutron irradiation, causing no SCC in an environment of light-water reactors even after subjecting the materials to neutron irradiation of approximately at... | 11/02/1999 |
| 5855844 | High-strength, notch-ductile precipitation-hardening stainless steel alloy and method of making A precipitation hardenable, martensitic stainless steel alloy is disclosed consisting essentially of, in weight percent, about ______________________________________ C 0.03 max Mn 1.0 max Si 0.7... | 01/05/1999 |
| 5827476 | Austenitic stainless steel with good oxidation resistance A new austenitic stainless steel comprising in % by weight: C: | 10/27/1998 |
| 5795540 | Corrosion and wear-resistant chill casting A corrosion and wear-resistant chill cast part is formed from an iron composition comprising from 26 to 36 percent Cr; 0 to 10 percent Ni; 2 to 6 percent Mo; 0 to 3 percent Cu; 0 to 0.2 percent N; 0 to 1.5 percent Si; 0 to 1.5 percent Mn; 4 to 9 percent V... | 08/18/1998 |
| 5753178 | Austenitic stainless steel for use when hot Austenitic stainless steel for use when hot, the chemical composition of which, by weight, includes from 16% to 25% of Ni, from 16% to 18.5% of Cr, from 0% to 3% of Mo, from 0% to 2% of Mn, from 1% to 3.5% of Ti, from 0% to 1.5% of Al, less than 0.1% of C... | 05/19/1998 |
| 5753177 | High-Ni austenitic stainless steel having excellent high-temperature strength A high-Ni austenitic stainless steel having swelling resistance, high-temperature creep strength, and phase stability under irradiation. The irradiation resistance and high-temperature strength of the high-Ni austenitic stainless steel are enhanced when i... | 05/19/1998 |
| 5681528 | High-strength, notch-ductile precipitation-hardening stainless steel alloy A precipitation hardenable, martensitic stainless steel alloy is disclosed consisting essentially of, in weight percent, about ______________________________________ C 0.03 max Mn 1.0 max Si 0.75 max ... | 10/28/1997 |
| 5660938 | Fe-Ni-Cr-base superalloy, engine valve and knitted mesh supporter for exhaust gas catalyzer An FE--Ni--Cr-base superalloy consists essentially of, by weight, up to 0.15% C, up to 1.0% Si, up to 3.0% Mn, 30 to 49% Ni, 10 to 18% Cr, 1.6 to 3.0% Al, one or more elements selected from Groups IVa and Va whose amount or total amount is 1.5 to 8.0%, th... | 08/26/1997 |
| 5651843 | Means for predicting preformance of stainless steel alloy for use with surgical needles A new and useful predictor for maraging stainless steel alloys is created, called the martensite finish temperature, Mf (° F.). This formula enables one to predict the temperature at which a steel is entirely converted to martensite, and is de... | 07/29/1997 |
| 5620805 | Alloy and multilayer steel tube having corrosion resistance in fuel combustion environment containing V, Na, S and Cl The present invention provides a highly corrosion-resistant steel tube for use as a steel tube for boilers, etc., used for installations where fossil fuel or combustible refuse is burnt as an energy source. An alloy which exhibits corrosion resistance in an en... | 04/15/1997 |
| 5370838 | Fe-base superalloy An Fe-base superalloy essentially consisting of up to 0.20% C, up to 1.0% Si, up to 2.0% Mn, more than 25% and less than 30% Ni, 10 to 15% Cr, one or both of not less than 0.05% and less than 1.0% Mo and not less than 0.05% and less than 2.0% W so that an... | 12/06/1994 |
| 5340413 | Fe-NI based soft magnetic alloys having nanocrystalline structure Fe-Ni based soft magnetic alloys having nanocrystalline particles substantially uniformly distributed throughout an amorphous matrix are disclosed. The soft magnetic alloys of the present invention may be represented by the general formula: (Fe1-x | 08/23/1994 |
| 5194220 | Austenitic cast steel and articles made thereof A heat-resistant, austenitic cast steel having a composition consisting essentially, by weight of: C: 0.15-0.60%, Si: 2.0% or less, Mn: 1.0% or less, Ni: 8.0-20.0%, Cr: 15.0-30.0%, W: 2.0-6.0%, Nb: 0.2-1.0%, B: 0.001-0.01%, and the balance being Fe and in... | 03/16/1993 |
| 5194221 | High-carbon low-nickel heat-resistant alloys Air-meltable, castable, machinable, weldable heat-resistant alloys that are very resistant to hot gas corrosion and that exhibit high creep rupture strengths. The alloys are, by weight, about 7.5 to aboout 18% nickel, about 23.5 to about 35% chromium, abo... | 03/16/1993 |
| 5160389 | Flexible tube for automotive exhaust systems A flexible tube for the exhaust system of an automobile made from a stainless steel is disclosed, which consists essentially of, by weight %: ______________________________________ C: at most 0.03%, Si: 0.1-2.0%, Mn: at most 2.0%, Cr: 18-26%, ... | 11/03/1992 |
| 5158743 | Hydrogen resistant alloy A precipitation hardening, high strength alloy, having a composition comprising in weight percent, 25.0% nickel, 15.0% chromium, 1.25% molybdenum, 0.25% vanadium, 2.65% titanium, 0.25% aluminum, 0.005% carbon, and the balance iron with incidental impuriti... | 10/27/1992 |
| 5077006 | Heat resistant alloys This invention relates to heat and corrosion resistant alloys for structural parts in industrial furnaces and similar installations requiring hot strength, long life and resistance to hot gas corrosion, carburization and thermal fatigue, and to master all... | 12/31/1991 |
| 5021215 | High-strength, heat-resistant steel with improved formability and method thereof A high-strength, heat-resistant steel with improved formability is disclosed, which consists essentially of, by weight %: ______________________________________ C: 0.05-0.30%, Si: not greater than 3.0%, Mn: not greater than 10%, ... | 06/04/1991 |
| 4999159 | Heat-resistant austenitic stainless steel A heat-resistant austenitic stainless steel is disclosed. This steel essentially consists of: not more than 0.06% C, 1-4% Si, 0.5-4% mn, not more than 0.035% P, not more than 0.005% S, 10-17% Ni, 14-20% Cr, 1-4% Mo, 0.01-0.5% Al, not more than 0.035% N, a... | 03/12/1991 |
| 4981647 | Nitrogen strengthened FE-NI-CR alloy A corrosion resistant metal alloy having improved formability and workability is disclosed which alloy contains in weight percent about 25% to 45% nickel, about 12% to 32% chromium, of at least one of 0.1% to 2.0% columbium, 0.2% to 4.0% tantalum, and 0.0... | 01/01/1991 |
| 4897132 | Turbine casing formed of a heat resistant austenitic cast steel Disclosed is a heat resistant austenitic cast steel consisting essentially of 0.03 to 0.09% by weight of carbon, 2.0% by weight or less of silicon, 3.0% by weight or less of manganese, 0.11 to 0.30% by weight of nitrogen, 6 to 15% by weight of nickel, 15 ... | 01/30/1990 |
| 4861547 | Iron-chromium-nickel heat resistant alloys Modified ACI-type alloys having creep rupture strengths higher than such alloys which retain the resistance to hot tearing or cracking during casting or welding as is associated with the standard ACI alloy counterparts of such modified alloys. The modifie... | 08/29/1989 |
| 4853185 | Nitrogen strengthened Fe-Ni-Cr alloy A corrosion resistant metal alloy having improved formability and workability is disclosed which alloy contains in weight percent about 25% to 45% nickel, about 12% to 32% chromium, of at least one of 0.1% to 2.0% columbium, 0.2% to 4.0% tantalum, and 0.0... | 08/01/1989 |
| 4849169 | High temperature creep resistant austenitic alloy An improved austenitic alloy having in wt % 19-21 Cr, 30-35 Ni, 1.5-2.5 Mn, 2-3 Mo, 0.1-0.4 Si, 0.3-0.5 Ti, 0.1-0.3 Nb, 0.1-0.5 V, 0.001-0.005 P, 0.08-0.12 C, 0.01-0.03 N, 0.005-0.01 B and the balance iron that is further improved by annealing for up to 1... | 07/18/1989 |
| 4822695 | Low porosity surfacing alloys Provided are improved nickel-based surfacing alloys containing from about 0.2% to about 5.0% by weight of either or both hafnium and niobium to the total alloy weight and iron-based surfacing alloys containing the combination of about 1.5% to about 2.5% b... | 04/18/1989 |
| 4816217 | High-strength alloy for industrial vessels An austenitic, age-hardenable nickel-iron-chromium alloy exhibiting high-strength, good corrosion and polythionic acid resistance and having a low work hardening rate. The economic alloy is useful for industrial vessels such as heat exchangers, chemical a... | 03/28/1989 |
