Chromium Containing Patents (Class 420/97)
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Publication number: 20150096652Abstract: Ni—Fe—Si—B and Ni—Fe—Si—B—P metallic glass forming alloys and metallic glasses are provided. Metallic glass rods with diameters of at least one, up to three millimeters, or more can be formed from the disclosed alloys. The disclosed metallic glasses demonstrate high yield strength combined with high corrosion resistance, while for a relatively high Fe contents the metallic glasses are ferromagnetic.Type: ApplicationFiled: January 7, 2014Publication date: April 9, 2015Applicant: Glassimetal Technology, Inc.Inventors: Jong Hyun Na, Michael Floyd, Marios D. Demetriou, William L. Johnson, Glenn Garrett, Maximilien Launey
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Publication number: 20140190593Abstract: Ni—Fe—Si—B and Ni—Fe—Si—B—P metallic glass forming alloys and metallic glasses are provided. Metallic glass rods with diameters of at least one, up to three millimeters, or more can be formed from the disclosed alloys. The disclosed metallic glasses demonstrate high yield strength combined with high corrosion resistance, while for a relatively high Fe contents the metallic glasses are ferromagnetic.Type: ApplicationFiled: January 7, 2014Publication date: July 10, 2014Applicant: Glassimetal Technology, Inc.Inventors: Jong Hyun Na, Michael Floyd, Marios D. Demetriou, William L. Johnson, Glenn Garrett, Maximilien Launey
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Patent number: 8328961Abstract: The invention concerns an iron-nickel alloy strip comprising the following expressed in wt. %: 32?Co+Ni?45%, 0?Co?6.5%, 0?Cr=6.5%, Cu?3%, Si?0.5%, Mn?0.75%, the rest being made up of iron and unavoidable impurities resulting from production, whereof the microstructure has a recrystallized volume fraction ranging from 3 to 97%, whereof the thickness is less than 0.5 mm. The invention also concerns the use thereof in the manufacture of support grids for integrated circuits.Type: GrantFiled: November 4, 2005Date of Patent: December 11, 2012Assignee: Imphy AlloysInventors: Georges Martinez, Pierre-Louis Reydet, Gilles Bresson, Gilles Coccoz, Jean-Luc Spire, Jerome Giusti
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Publication number: 20120301309Abstract: Dissimilar metal welds including a buttering portion with a small variation in strength distribution in a plate thickness direction are formed by welding two parent materials having at least one of different compositions and different refining conditions through a buttering for alleviating mismatch between one of the different compositions and the different refining conditions of the two members and through a welded metal for joining one of the parent materials and the buttering. The buttering is formed of welding metals laminated in a plate thickness direction, and a dilution ratio of the buttering with the parent materials is 50% or less. The manufacturing method includes performing butt welding on a dummy material formed by increasing a groove depth by providing a member on a bottom side of a welding groove and on parent materials by using the buttering; and processing a groove within a welding metal formed of the buttering.Type: ApplicationFiled: May 22, 2012Publication date: November 29, 2012Inventors: Eiji NISHIOKA, Jun SATO, Shinya IMANO, Takeshi KUDO, Kenichi MURATA, Kazutaka HOSOKAWA, Kazuhiko ENDO
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Patent number: 8268101Abstract: The invention relates to an austenitic stainless steel strip having an elastic limit Rp0.2 which is greater than or equal to 600 MPa, a breaking load Rm which is greater than or equal to 800 MPa, an elongation A80 which is greater than or equal to 40% and a bright surface finish of the bright annealed type. The invention also relates to a method for the continuous production of said austenitic stainless steel strip.Type: GrantFiled: April 6, 2006Date of Patent: September 18, 2012Assignee: Aperam Stainless FranceInventors: Francois Conrad, Christian Proudhon, Patrick Borgna
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Publication number: 20110293463Abstract: An alloy composition comprising iron present in the range of 49 atomic percent (at %) to 65 at %, nickel present in the range of 10.0 at % to 16.5 at %, cobalt optionally present in the range of 0.1 at % to 12 at %, boron present in the range of 12.5 at % to 16.5 at %, silicon optionally present in the range of 0.1 at % to 8.0 at %, carbon optionally present in the range of 2 at % to 5 at %, chromium optionally present in the range of 2.5 at % to 13.35 at %, and niobium optionally present in the range of 1.5 at % to 2.5 at %, wherein the alloy composition exhibits spinodal glass matrix microconstituents when cooled at a rate in the range of 103K/s to 104K/s and develops a number of shear bands per linear meter in the range of greater than 1.1×102 m?1 to 107 m?1 upon application of a tensile force applied at a rate of 0.001 s?1.Type: ApplicationFiled: May 27, 2011Publication date: December 1, 2011Inventors: Daniel James BRANAGAN, Brian E. MEACHAM, Jason K. WALLESER, Jikou ZHOU, Alla V. SERGUEEVA
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Patent number: 8043407Abstract: It is an object of the present invention to provide a similar composition metal type welding solid wire capable of forming a welded joint having excellent cryogenic characteristics, such as ensuring a low-temperature toughness equivalent to that of the cryogenic base metal, and in addition, further having a high crack initiation resistance, and a weld metal thereof. The welding solid wire of the present invention is an iron base welding solid wire including carbon: 0.10 mass % or less (not inclusive of 0%), silicon: 0.15 mass % or less (not inclusive of 0%), nickel: 8.0 to 15.0 mass %, manganese: 0.10 to 0.80 mass %, and Al: 0.1 mass % or less (not inclusive of 0%), and oxygen in an amount of 150 ppm or less (inclusive of 0), characterized by including: a REM: 0.005 to 0.040 mass %, or chromium: 4.0 mass % or less (not inclusive of 0%).Type: GrantFiled: October 2, 2008Date of Patent: October 25, 2011Assignee: Kobe Steel, Ltd.Inventors: Hidenori Nako, Hiroyuki Takeda, Yoshitomi Okazaki, Kazuyuki Suenaga, Kohjiroh Nakanishi
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Publication number: 20100284849Abstract: An austenitic cast iron according to the present invention has Ni: from 7 to 15% by mass, and is characterized in that it comprises a base structure in which an austenite phase makes a major phase even in ordinary-temperature region by adjusting the respective compositions of Cr, Ni and Cu, excepting C and Si, so as to fall within predetermined ranges. In accordance with the present invention, it is possible to obtain an austenitic cast iron, which is excellent in terms of oxidation resistance and the like, inexpensively, while reducing the content of expensive Ni.Type: ApplicationFiled: August 29, 2008Publication date: November 11, 2010Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, MIE PREFECTUREInventors: Tomohei Sugiyama, Manabu Ishikawa, Hiroyuki Isomura, Mamoru Kojima, Naoki Yamamoto, Kyoichi Kinoshita, Takao Fujikawa
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Patent number: 7754142Abstract: A high-carbon austenitic iron-base alloy with good corrosion and wear resistance, particularly useful for valve seat insert applications when corrosion resistance is required, comprises about 1.8-3.5 wt % carbon, about 12-24 wt % chromium, about 0.5-4 wt % silicon, about 12-25 wt % nickel, about 2-12 wt % molybdenum and tungsten combined, about 0.05-4 wt % niobium and vanadium combined, about 0-1 wt % titanium, about 0.01-0.2 wt % aluminum, about 0.05-3 wt % copper, and less than 1.5 wt % manganese, with the balance being iron and a small amount of impurities.Type: GrantFiled: April 13, 2007Date of Patent: July 13, 2010Assignee: Winsert, Inc.Inventor: Xuecheng Liang
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Patent number: 7488392Abstract: A stainless steel comprising at least 20 weight % of chromium and at least 1.0 weight % of manganese is adapted to support an overcoating having a thickness from 1 to 10 microns of a spinel of the formula MnxCr3?xO4 wherein x is from 0.5 to 2. Preferably the overcoating is on chromia and has stability against chemical reaction at temperatures at least 25° C. higher than the uncoated chromia.Type: GrantFiled: December 8, 2005Date of Patent: February 10, 2009Assignee: Nova Chemicals (International) S.A.Inventors: Leslie Wilfred Benum, Michael C. Oballa, Sabino Steven Anthony Petrone
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Patent number: 7195680Abstract: The invention relates to a soft magnetic alloy with the following composition in wt. %: 28%?Ni?34%, 0%?Co?4%, 0%?Cu?4%, 1%?Cr, 0%?Mo?8%, 0%?Nb?1%, 0%?Mn?2%, 0%?V?5%, 0%?W?5%, 0%?Si?4%, 0%?Al?4%, 0%?C?0.4%, optionally one or several elements selected from magnesium and calcium the content of which is such as to remain below 0.1%, the rest being iron and impurities from production. The chemical composition furthermore satisfies the following relationships: 180.5?6×Ni2.5×(Cr+Mo+V+W+Si+Al)+4×(Co+Cu)?197.5 et Co+Cu?4%. The invention relates to the use thereof for production of a stator for use in a motor for clock-making.Type: GrantFiled: February 14, 2003Date of Patent: March 27, 2007Assignee: Imphy AlloysInventors: Thierry Waeckerle, Hervë Fraisse, Bruno Boulogne
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Patent number: 6916444Abstract: This invention related to a novel iron base alloy using residual austenite to improve wear resistance for valve seat insert material for internal combustion engines. The residual austenite is stable even after heat treatment and liquid nitrogen chilling. The alloy comprises of 2.0-4.0 wt % carbon, 1.0-3.0 wt % silicon, 0-4.0 wt % manganese, 3.0-9.0 wt % chromium, 5.0-15.0 wt % molybdenum, 3.0-15.0 wt % nickel, 0-6.0 wt % vanadium, 0-4.0 wt % niobium, 0-6.0 wt % cobalt, and the balance being iron with impurities.Type: GrantFiled: February 12, 2002Date of Patent: July 12, 2005Assignee: Alloy Technology Solutions, Inc.Inventor: Xuecheng Liang
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Patent number: 6866816Abstract: A unique austenitic iron base alloy for wear and corrosion resistant applications, characterized by its excellent sulfuric acid corrosion resistance and good sliding wear resistance, is useful for valve seat insert applications when corrosion resistance is required. The alloy comprises 0.7-2.4 wt % carbon, 1.5-4 wt % silicon, 3-9 wt % chromium, less than 6 wt % manganese, 5-20 wt % molybdenum and tungsten combined, with the tungsten comprising not more than ? of the total, 0-4 wt % niobium and vanadium combined, 0-1.5 wt % titanium, 0.01-0.5 wt % aluminum, 12-25 wt % nickel, 0-3 wt % copper, and at least 45 wt % iron.Type: GrantFiled: August 12, 2003Date of Patent: March 15, 2005Assignee: Alloy Technology Solutions, Inc.Inventors: Xuecheng Liang, Gary R. Strong
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Patent number: 6852276Abstract: An iron cast having iron as a major component, and including C, Si, Mn, Cr, Mo and Ni, where the cast iron provides excellent heat resistance and oxidation resistance at high temperatures. The cast iron beneficially contains between 2.5 to 3.0% of C; 2.0 to 3.0% of Si; 0.8 to 1.2% of Mn; 1.7 to 3.0% of Cr; 0.025 to 0.06% of Mg; 0.15 to 0.4% of Mo; and 17.0 to 20.0% of Ni; but less than 0.1% of P; and less than 0.02% of S. The cast iron is suitable for extremely severe conditions at high temperatures, and can be used for an exhaust manifold for engines where temperature of the manifold may reach 850° C.Type: GrantFiled: November 15, 2002Date of Patent: February 8, 2005Assignee: Hyundai Motor CompanyInventor: Hak Jin Kim
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Patent number: 6846368Abstract: The present invention provides a cast steel for ring-shaped components that has a low average coefficient of thermal expansion in a temperature range of 20° C. to 500° C. and high strength and good oxidation resistance at 500° C., which are required for ring-shaped components for use as blade rings and seal ring retainers of gas turbines, and that can hence be used for blade rings and seal ring retainers of gas turbines. Specifically, the present invention provides a high-strength and low-thermal expansion cast steel comprising, on a mass percentage basis, 0.1 to 0.8% of C, 0.1 to 1.0% of Si, 0.1 to 1.0% of Mn, 0.01 to 0.1% of S, greater than 40% and up to 50% of Ni, not greater than 4% (inclusive of 0%) of Co, greater than 1.5% and up to 4% of Cr, 0.01 to 0.1% of Al, and 0.001 to 0.1% of Mg, the remainder being substantially Fe.Type: GrantFiled: July 8, 2002Date of Patent: January 25, 2005Assignees: Hitachi Metals, Ltd., Mitsubishi Heavy Industries, Ltd.Inventors: Susumu Katsuragi, Toshiaki Nonomura, Yasuhiro Ojiro, Daisuke Izutsu
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Patent number: 6824625Abstract: The invention relates to a magnetostriction control alloy sheet advantageously used as a high resolution shadow mask having a low coefficient of thermal expansion, superior magnetic properties and a high Young's modulus after a blackening process, a manufacturing process for the same, and a part for a color Braun tube such as a shadow mask. The magnetostriction control alloy sheet comprises C at 0.01 wt. % or less, Ni at 30 to 36 wt. %, Co at 1 to 5.0 wt. %, and Cr at 0.1 to 2 wt. %, the remainder Fe and unavoidable impurities, and having a magnetostriction &lgr; after the softening and annealing of (−15×10−6) to (25×10−6).Type: GrantFiled: July 19, 2001Date of Patent: November 30, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Norio Fukuda, Shinya Nakamura, Hiroyuki Yamada, Akira Makita, Tsutomu Hatano, Nobuaki Kanayama, Takahito Aoki
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Fe-Ni-Cr- based alloy strip having improved press-formability and used for electrode of electron gun
Patent number: 6806635Abstract: The Fe—Ni—Cr based alloy strip having improved press-formability is provided. The alloy strip essentially consists of from 15 to 20% of Cr, from 9 to 15% of Ni, the balance being Fe and unavoidable impurities, has 0.03% or less of cleanliness as stipulated under JIS G 0555, has final annealed temper and a preferred orientation texture in terms of 50% or less of degree of preferred orientation of the (111) plane in a central portion between the sheet surfaces which is expressed by the following formula: &agr;c(111)=[Ic(111)/{Ic(111)+Ic(200)+Ic(220)+Ic(311)}]×100(%), with the proviso Ic(hkl) is the integral X-ray diffraction intensity of the (hkl) plane.Type: GrantFiled: September 29, 2000Date of Patent: October 19, 2004Assignee: Nippon Mining and Metals Co., Ltd.Inventor: Toshiyuki Ono -
Publication number: 20040197220Abstract: The present invention provides a cast steel for ring-shaped components that has a low average coefficient of thermal expansion in a temperature range of 20° C. to 500° C. and high strength and good oxidation resistance at 500° C., which are required for ring-shaped components for use as blade rings and seal ring retainers of gas turbines, and that can hence be used for blade rings and seal ring retainers of gas turbines. Specifically, the present invention provides a high-strength and low-thermal expansion cast steel comprising, on a mass percentage basis, 0.1 to 0.8% of C, 0.1 to 1.0% of Si, 0.1 to 1.0% of Mn, 0.01 to 0.1% of S, greater than 40% and up to 50% of Ni, not greater than 4% (inclusive of 0%) of Co, greater than 1.5% and up to 4% of Cr, 0.01 to 0.1% of Al, and 0.001 to 0.1% of Mg, the remainder being substantially Fe.Type: ApplicationFiled: February 10, 2004Publication date: October 7, 2004Inventors: Susumu Katsuragi, Toshiaki Nonomura, Yasuhiro Ojiro, Daisuke Izutsu
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Patent number: 6786624Abstract: A method and apparatus for a high temperature corrosion resistant composition. The composition is formed into a bulb shield for a vehicle, including automobiles and motorcycles. An alloy composition may be used to stamp a bulb shield. The bulb shield may comprise a cup portion and a connector. Either the cup portion, the connector, or both may comprise an Inconel® alloy composition. The bulb shield may be positioned in front of a headlight bulb to steer light in a desired direction. The bulb shield may be electropolished to provide a decorative attribute to the lamp. The bulb shield may be exposed to high temperatures from the headlight bulb. The Inconel® composition resists deterioration and discoloration of the bulb shield due to the high temperatures. The Inconel® 600 composition also improves the durability of the bulb shield.Type: GrantFiled: May 6, 2002Date of Patent: September 7, 2004Assignee: North American Lighting, Inc.Inventor: Thomas J. Poorman
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Patent number: 6776728Abstract: A weight member for a golf club head is made of a WFeNi alloy by a precision casting process. The WFeNi alloy includes wt 15%-40% of iron, wt 30%-60% of nickel, wt 15%-30% of tungsten, wt 1.5%-10.0% of chromium, and wt 0.5%-5.0% of molybdenum. Chromium improves the rust-resisting property of the weight member. Molybdenum reduces the risk of cracks in the weight member during welding. Uniformity of shining finishing of the weight member can be improved by controlling a mixture ratio of nickel to tungsten. Manganese, copper, vanadium, and niobium may be added to improve the mechanical properties of the weight member.Type: GrantFiled: July 3, 2003Date of Patent: August 17, 2004Assignee: Nelson Precision Casting Co., Ltd.Inventors: Chan-Tung Chen, Yan-Zheng Su
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Patent number: 6767414Abstract: There is provided inexpensive maraging steel having high fatigue strength and maraging steel strip formed by use of the same. The maraging steel having high fatigue strength, consisting essentially, by mass, of not more than 0.008% C, from 0 inclusive but not more than 2.0% Si, from 0 inclusive but not more than 3.0% Mn, not more than 0.010% P, not more than 0.005% S, 12 to 22% Ni, 3.0 to 7.0% Mo, less than 7.0% Co, not more than 0.1% Ti, not more than 2.0% Al, less than 0.005% N, not more than 0.0033% O (oxygen), and the balance substantially Fe, a total amount of (3Si+1.8Mn+Co/3+Mo+2.6Ti+4Al) being in a range of 8.0 to 13.0%.Type: GrantFiled: December 19, 2000Date of Patent: July 27, 2004Assignee: Hitachi Metals, Ltd.Inventors: Toshihiro Uehara, Etsuo Fujita
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Patent number: 6758764Abstract: A weight member for a golf club head is made of a WFeNi alloy by a precision casting process. The WFeNi alloy includes nickel 30-60 wt %, tungsten 15-30 wt %, chromium 1.5-10.0 wt %, and iron that is the remaining portion. Chromium improves the rust resisting property of the weight member and lengthens the life of the weight member. Uniformity of shining finishing of the weight member can be improved by controlling a mixture ratio of nickel to tungsten. Silicon may be added to improve the flowability of the molten metal. Manganese, copper, vanadium, and niobium may be added to improve the mechanical properties of the weight member.Type: GrantFiled: July 3, 2003Date of Patent: July 6, 2004Assignee: Nelson Precision Casting Co., Ltd.Inventors: Chan-Tung Chen, Yan-Zheng Su
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Patent number: 6758066Abstract: Thermal conductivity of glassware forming blank molds and blow molds of Ni-Resist ductile iron is selectively controlled by formation of compacted graphite in the mold microstructure during preparation of the melt and casting of the mold bodies. Specifically, with a Type D5 Ni-Resist ductile iron according to ASTM-A439-84, compacted graphite is selectively formed in the cast microstructure of the mold body by reducing the magnesium and sulphur concentrations in the iron composition to the range of 0.01 to 0.04 wt % magnesium and 0.00 to 0.01 wt % sulphur, and adding titanium to the iron composition in the range of 0.10 to 0.25 wt % titanium. Whereas formation of compacted graphite in the cast microstructure is normally considered to be undesirable for glassware forming molds, it has been found that formation of a small but appreciable amount of graphite provides the opportunity selectively to tailor the thermal conductivity characteristics of the mold body.Type: GrantFiled: June 12, 2001Date of Patent: July 6, 2004Assignee: Owens-Brockway Glass Container Inc.Inventor: David L. Lewis
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Publication number: 20040060622Abstract: The present invention is related to an air melted, substantially graphite and nitrogen-free alloy, aged or not aged by precipitation hardening, specially adapted for gas turbine or internal combustion engine exhaust system parts, comprising a graphite-free microstructure of the following composition: 1 Carbon max 0.4 wt. % Silicon 0.5 to 6 wt. % Manganese 0.1 to 4.5 wt. % Phosphorous 0.01 to 0.08 wt. % Nickel 13 to 38 wt. % Chromium 0 to 6 wt. % Sulphur max 0.12 wt. % Nitrogen max 0.02 wt.Type: ApplicationFiled: October 1, 2003Publication date: April 1, 2004Inventor: John David Lilley
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Patent number: 6652991Abstract: The addition of small amounts of CeO2 and Cr to intermetallic compositions of NiAl and FeAl improves ductility, thermal stability, thermal shock resistance, and resistance to oxidation, sulphidization and carburization.Type: GrantFiled: October 9, 2002Date of Patent: November 25, 2003Assignee: The Governors of the University of AlbertaInventors: You Wang, Weixing Chen
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Patent number: 6623869Abstract: A metallic material of the invention which comprises, in mass %, C: not more than 0.2%, Si: 0.01-4%, Mn: 0.05-2%, P: not more than 0.04%, S: not more than 0.015%, Cr: 10-35%, Ni: 30-78%, Al: not less than 0.005% but less than 4.5%, N: 0.005-0.2%, and one or both of Cu: 0.015-3% and Co: 0.015-3%, with the balance substantially being Fe, and of which the value of 40Si+Ni+5Al+40N+10 (Cu+Co), wherein the symbols of elements represent the contents of the respective elements, is not less than 50 and has excellent corrosion resistance in an environment in which metal dusting is ready to occur and, therefore, can be utilized as or in heating furnace pipes, piping systems, heat exchanger pipes and so forth to be used in a petroleum refinery or in petrochemical plants, and can markedly improve the equipment durability and safety.Type: GrantFiled: February 11, 2003Date of Patent: September 23, 2003Inventors: Yoshitaka Nishiyama, Nobuo Otsuka
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Patent number: 6440579Abstract: Process for producing a drawn wire, in particular a wire for reinforcing tires, having a diameter of less than 0.3 mm by drawing a base wire rod having a diameter of greater than 5 mm or a predrawn base wire made of steel with the following composition by weight: carbon≦40×10−3% nitrogen≦40×10−3%, the carbon and nitrogen satisfying the relationship C+N≦50×10−3%, 0.2%≦silicon≦1.0%, 0.2%≦manganese≦5%, 9%≦nickel≦12%, 15%≦chromium≦20%, 1.5%≦copper≦4%, sulfur≦10×10−3%, phosphorus<0.050%, 40×10−4%≦total oxygen≦120×10−4%, 0.1×10−4%≦aluminum≦20×10−4%, magnesium≦5×10−4%, 0.Type: GrantFiled: February 18, 1998Date of Patent: August 27, 2002Assignees: Ugine Savoie Societe de Production Internationale de Trefiles, Sprint MetalInventors: Jean-Michel Hauser, Joël Marandel, Etienne Havette
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Patent number: 6428633Abstract: In order to conduct welding so that the welded steel shows a decreased residual stress after welding without a post treatment such as a PWHT, the steel for welded structures and the welding wire of the present invention starts a transformation from austenite into martensite at a temperature (Ms temperature) from at least 200° C. to up to 350° C., and has a yield strength from at least 60 kg/mm2 to up to 120 kg/mm2 at the transformation starting temperature. The multipass welding process of the present invention comprises forming a weld metal having a Ms temperature of 150° C. to 300° C., and TIG remelt-run welding the surface of the final layer.Type: GrantFiled: October 19, 1998Date of Patent: August 6, 2002Assignee: Nippin Steel CorporationInventors: Tadashi Kasuya, Shigeru Ohkita, Masao Fuji, Naoki Saitou, Junichi Kobayashi, Toshihiko Chiba
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Patent number: 6379477Abstract: An Fe—Cr—Ni alloy for electron gun electrodes, comprises: 15 to 20% Cr; 9 to 15% Ni; 0.12% or less C; 0.005 to 1.0% Si; 0.005 to 2.5% Mn; 0.03% or less P; 0.0003 to 0.0100% S; 2.0% or less Mo; 0.001 to 0.2% Al; 0.003% or less O; 0.1% or less N; 0.1% or less Ti; 0.1% or less Nb; 0.1% or less V; 0.1% or less Zr; 0.05% or less Ca; 0.02% or less Mg by weight; balance Fe; and inevitable impurities. When the alloy is rolled into a sheet with a thickness in the range of 0.1 to 0.7 mm, the surface portion of the sheet includes groups of lining inclusions. The number of groups with widths of 10 &mgr;m or more and less than 20 &mgr;m and with lengths of 20 &mgr;m or more is 20/mm2 or less, and the number of groups with widths of 20 &mgr;m or more and with lengths of 20 &mgr;m or more is 5/mm2 or less.Type: GrantFiled: August 17, 2000Date of Patent: April 30, 2002Assignee: Nippon Mining & Metals Co., Ltd.Inventor: Toshiyuki Ono
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Patent number: 6355212Abstract: The invention is directed to anti-corrosive alloys and relates in particular to an alloy containing cobalt, chromium, aluminum, yttrium, silicon, a metal from the second main group, together with the corresponding oxide, in the following proportions: chromium (Cr) 26.0-30%; aluminum (Al) 5.5-13.0%; yttrium (Y) 0.3-1.5%; silicon (Si) 1.5-4.5%; metal from the second main group (magnesium, calcium, barium, strontium) 0.1-2.0%; oxide of the corresponding metal from the second main group 0.1-2.0%; cobalt (Co) remaining percentage. Preferably, tantalum (Ta) is also added in a proportion of 0.5-4.0%, and the remaining percentage of cobalt is replaced by a remaining percentage of Me, Me being understood to mean a metal which may be nickel (Ni) or iron (Fe) or cobalt (Co) or a composition comprising Ni—Fe—Co, Ni—Fe, Ni—Co, Co—Fe.Type: GrantFiled: January 5, 2000Date of Patent: March 12, 2002Assignee: Turbocoating SpAInventor: Nelso Antolotti
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Patent number: 6224824Abstract: Disclosed is an alloy steel of high corrosion resistance to hot molten salts containing chlorides and/or alkali oxides. The alloy steel is manufactured from a composition comprising 20-40 weight % of Ni, 0-8 weight % of Cr, 0.05 weight % or less of C, 0.5 weight % or less of Si, 1.0 weight % or less of Mn, 0.05 weight % or less of S, and the balance of Fe to total weight. With a low Cr content, the alloy steel is superb in the corrosion resistance to chloride and/or alkali oxide-containing molten salts, including LiCl—Li2O. Also, the alloy steel shows stable corrosion resistance to molten salts even at high temperature as well as low temperature in addition to being superior to workability. Thus, the alloy steel can be processed into plates, bars or pipes which are used for structural materials and structural components for treating molten salts.Type: GrantFiled: December 17, 1999Date of Patent: May 1, 2001Assignee: Korea Electric Power CorporationInventors: Jun Shan Zhang, Young Joon Shin, Soo Haeng Cho, Hyun Soo Park
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Patent number: 5858129Abstract: Disclosed is an austenite stainless steel comprising: no more than 0.05% by weight of C; no more than 0.25% by weight of Si; no more than 0.40% by weight of Mn; no more than 0.040% by weight of P; no more than 0.003% by weight of S; 30.0 to 40.0% by weight of Ni; 20.0 to 26.0% by weight of Cr; 5.0 to 8.0% by weight of Mo; no more than 0.1% by weight of Al; 0.001 to 0.010% by weight of B; 0.15 to 0.30% by weight of N; and balance of Fe and inevitable impurity. The austenite stainless steel satisfying formula (1) and (2) mentioned below (wherein "Cr", "Mo", "N", "Si" and "Mn" mean content of each element).Cr+3.3Mo+20N.gtoreq.Type: GrantFiled: July 30, 1997Date of Patent: January 12, 1999Assignee: Nippon Yakin Kogyo Co., Ltd.Inventors: Yutaka Kobayashi, Takeya Toge, Yoshito Fujiwara
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Patent number: 5688471Abstract: The alloy of the invention provides a low coefficient of thermal expansion alloy having a CTE of about 4.9.times.10.sup.-6 m/m/.degree.C. or less at 204.degree. C. and a relatively high strength. The alloy contains about 40.5 to about 48 nickel, about 2 to about 3.7 niobium, about 0.75 to about 2 titanium, about 0 to about 1 aluminum, about 3.7 or less total niobium plus tantalum and a balance of iron and incidental impurities. Alloys of the invention may be aged to a Rockwell C hardness of at least about 30.Type: GrantFiled: August 14, 1996Date of Patent: November 18, 1997Assignee: Inco Alloys International, Inc.Inventors: John Scott Smith, Ladonna Sheree Hillis, Melissa Ann Moore
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Patent number: 5620535Abstract: An alloy sheet for making a shadow mask consists essentially of 34 to 38 wt. % Ni, 0.07 wt. % or less Si, 0.002 wt. % or less B, 0.002 wt. % or less O, less than 0.002 wt. % N and the balance being Fe and inevitable impurities;said alloy sheet after annealing before press-forming having 0.2% proof stress of 28 kgf/mm.sup.2 or less; anda gathering degree of {211} plane being 16% or less.A method for manufacturing an alloy sheet comprises:a finish cold-rolling step of cold-rolling the cold-rolled sheet at a cold-rolling reduction ratio in response to an average austenite grain size D (.mu.m), the reduction ratio of final cold-rolling R (%) satisfying the equations below;16.ltoreq.R.ltoreq.75,6.38D-133.9.ltoreq.R.ltoreq.6.38D-51.0a softening annealing step of annealing said cold rolled sheet in a temperature range of 720.degree. to 790.degree. C. for 2 to 40 min. before press-forming and on conditions satisfying the equation below;T.gtoreq.-53.8 log t+806,where T(.degree. C.) is the temperature and t (min.Type: GrantFiled: December 1, 1993Date of Patent: April 15, 1997Assignee: NKK CorporationInventors: Tadashi Inoue, Kiyoshi Tsuru, Michihito Hiasa, Tomoyoshi Okita
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Stainless steel member for semiconductor fabrication equipment and surface treatment method therefor
Patent number: 5569334Abstract: Stainless steel member for semiconductor fabrication equipment having a passive state coating on the surface of the stainless steel comprising, in weight percent, 0.1% or less of C, 2.0% or less of Si, 3.0% or less of Mn, 10% or more of Ni, 15 to 25% of Cr, 1.5 to 4.5% of Mo, 0.5% or less of one or more rare earth element and Fe for substantially the whole remainder. Said passive state coating has a pitting potential of at least 900 mV (when the current density of the anode polarization curve determined with a potentiostat in 3.5% aqueous sodium chloride solution is 10 .mu.A/cm.sup.2) and has a thickness of 0.5 to 20 nm. The invention also includes a surface treatment method for the stainless steel.Type: GrantFiled: December 7, 1993Date of Patent: October 29, 1996Assignee: Hitachi Metals, Ltd.Inventors: Tsunehiro Kawata, Katsuhiko Kojo, Youichiro Kazama, Takayuki Fukaya, Toshihiko Tsujimura -
Patent number: 5453138Abstract: An alloy sheet containing Fe, Ni and Cr has an average austenite grain size of 15 to 45 .mu.m and a degree of mixed grain for austenite grain size of 4.5 to 50%; the alloy sheet has a gathering degree of the {331} plane on a surface of the alloy sheet of 8 to 35%, a gathering degree of the {210} plane of 1 to 20% and a gathering degree of the {211} plane of 2 to 20%; the degree of mixed grain is expressed by the equation: (.vertline.0.5 Dmax-D.vertline./D).times.100 (%), where D is an average austenite grain size, and Dmax is a maximum austenite grain size in said alloy sheet.Type: GrantFiled: January 18, 1994Date of Patent: September 26, 1995Assignee: NKK CorporationInventors: Tadashi Inoue, Kiyoshi Tsuru, Tomoyoshi Okita, Michihito Hiasa
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Patent number: 5338376Abstract: This invention relates to a Fe-Ni based high permeability amorphous alloy consisting of, in atom percent Ni 30-45%, Cr 0.5-1.2%, Si 5-14%, B 5-15%, P 1.0-3.0%, the balance Fe and inevitable impurities. The alloy is made by the rapid quenching melt method. It can be heat-treated in air and the excellent magnetic properties can be obtained as follows: B.sub.10 7900 Gs, B.sub.r 7500 Gs, H.sub.C 0.008 Oe, u.sub.m 68.times.10.sup.4. The present alloy is applied to make various magnetic devices which are used in electric apparatus and equipments.Type: GrantFiled: June 3, 1993Date of Patent: August 16, 1994Assignee: Central Iron and Steel Research InstituteInventors: Goudong Liu, Chuanli Zhang, Hongliang Ma, Shizhen Xu, Jingbei Li, Xuecai Li, Lidong Ding
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Patent number: 5268044Abstract: A high strength, high fracture toughness steel alloy consisting essentially of, in weight percent, about______________________________________ C 0.2-0.33 Mn 0.20 max. Si 0.1 max. P 0.008 max. S 0.004 max. Cr 2-4 Ni 10.5-15 Mo 0.75-1.75 Co 8-17 Ce Effective amount-0.030 La Effective amount-0.01 Fe Balance ______________________________________and an article made therefrom are disclosed. A small but effective amount of calcium can be present in this alloy in substitution for some or all of the cerium and lanthanum. The alloy is an age-hardenable martensitic steel alloy which provides a unique combination of tensile strength and fracture toughness. The alloy provides excellent mechanical properties when hardened by vacuum heat treatment with inert gas cooling and has a low ductile-to-brittle transition temperature.Type: GrantFiled: June 30, 1992Date of Patent: December 7, 1993Assignee: Carpenter Technology CorporationInventors: Raymond M. Hemphill, David E. Wert, Paul M. Novotny, Michael L. Schmidt
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Patent number: 5252148Abstract: A soft magnetic alloy having a composition of general formula:(Fe.sub.1-a Ni.sub.a).sub.100-x-y-z-p-q Cu.sub.x Si.sub.y B.sub.z Cr.sub.p M.sup.1.sub.q (I)wherein M.sup.1 is V or Mn or a mixture of V and Mn, 0.ltoreq.a.ltoreq.0.5, 0.1.ltoreq.x.ltoreq.5, 6.ltoreq.y.ltoreq.20, 6.ltoreq.z.ltoreq.20, 15.ltoreq.y+z.ltoreq.30, 0.5.ltoreq.p.ltoreq.10, and 0.5.ltoreq.q.ltoreq.10 and possessing a fine crystalline phase is suitable as a core, especially a wound core and a compressed powder core.Type: GrantFiled: August 10, 1992Date of Patent: October 12, 1993Assignee: TDK CorporationInventors: Masao Shigeta, Asako Kajita, Ippo Hirai, Tsutomu Choh
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Patent number: 5158624Abstract: An alloy essentially consisting of 35-40% Ni, 5-14% Cr and balance Fe and unavoidable impurities has excellent alternating current magnetic characteristics and good direct current magnetic characteristics.Type: GrantFiled: August 31, 1990Date of Patent: October 27, 1992Assignee: Nisshin Steel Company Ltd.Inventors: Takuji Okiyama, Takuji Hara, Keiji Osaki, Yutaka Kawai
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Patent number: 5147475Abstract: The invention relates to a high silicon containing stainless steel alloy in which the amounts of the alloy elements have been balanced such that the austenite phase remains stable without being deformed into martensite even under large amounts of working. The steel alloy comprises 0.04-0.25% C, 2.0-5.0% Si, 3.5-7.5% Mn, 16-21% Cr, 8-11% Ni, 0.10-0.45% N, the remainder being iron and normal impurities.Type: GrantFiled: February 26, 1991Date of Patent: September 15, 1992Assignee: Sandvik ABInventor: Hakan Holmberg
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Patent number: 5135588Abstract: A Ni-Fe-Cr soft magnetic alloy essentially consisting of 40-50% Ni, 0.5-5% Cr and balance Fe and satisfying the following conditions:50.ltoreq.(Ni%)+4.times.(Cr%).ltoreq.60;S+O+B.ltoreq.0.008%;S.ltoreq.0.003%;O.ltoreq.0.005%; andB.ltoreq.0.005%;has excellent magnetic characteristics for magnetic core materials.Type: GrantFiled: March 12, 1991Date of Patent: August 4, 1992Assignee: Nisshin Steel Company Ltd.Inventors: Takuji Okiyama, Takuji Hara, Hisao Yasumura, Yutaka Kawai
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Patent number: 4911884Abstract: This invention relates to corrosion resistant, austenitic, non-magnetic alloys. The alloys contain about 32 to 38% nickel, about 3 to 7% chromium, about 3 to 5% titanium, about 0.3 to 1.5% aluminum, about 0.5 to 1.5% molybdenum, an effective amount of vanadium, about 0.005 to 0.02% boron, up to about 0.02% carbon, and the balance substantially iron. The alloys are controlled temperature hot rolled and age annealed to provide strain hardening and precipitation strengthening to achieve yield strength objectives established for retaining rings in new high capacity generators. Yield strengths of at least about 200 ksi can be produced by the alloys of this invention making them suitable for use in new high capacity generators.Type: GrantFiled: January 30, 1989Date of Patent: March 27, 1990Assignee: General Electric CompanyInventor: Keh-Minn Chang
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Patent number: 4863682Abstract: A chromium-nickel austenitic stainless steel alloy composition, including specific proportions of carbon with a combination of niobium and tantalum.Type: GrantFiled: March 11, 1988Date of Patent: September 5, 1989Assignee: General Electric CompanyInventors: David J. Coates, Gerald M. Gordon, Alvin J. Jacobs, David W. Sandusky
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Patent number: 4814141Abstract: A high toughness, ultra high-strength steel having an excellent stress corrosion cracking resistance with a yield stress of not less than 110 kgf/mm.sup.2, which comprises 0.06-0.20 wt % of C, not more than 0.35 wt % of Si, 0.05-1.0 wt % of Mn, 8-11 wt % of Ni, 0.2-2.5 wt % of Cr, 0.7-2.5 wt % of Mo, 0.05-0.2 wt % of V, 0.01-0.08 wt % of Al, not more than 0.005 wt % of N, not more than 0.003 wt % of O, provided that the value of Al (%).times.N (%).times.10.sup.4 is not more than 1.5, and the balance being substantially Fe and inevitable impurities.Type: GrantFiled: April 22, 1987Date of Patent: March 21, 1989Assignees: Japan as Represented by Director General, Technical Research and Development Institute, Japan Defense Agency, Nippon Steel Corporation, Kawasaki Steel CorporationInventors: Yasuho Imai, Yoichiro Tobe, Ko Moriyama, Seinosuke Yano, Syuzo Ueda, Seimei Karino
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Patent number: 4810464Abstract: An iron-base, hard facing alloy characterized by the absence of cobalt but having performance characteristics approximating cobalt-base, hard surfacing alloys. The alloys consist essentially of, by weight, from about 3% to about 5% boron, up to about 10% chromium, from about 27% to about 43% nickel, from about 0.1% to about 5% silicon, from about 0.2% to about 1.5% carbon, from about 0.1% to about 2% manganese, with iron comprising the balance.Type: GrantFiled: May 11, 1987Date of Patent: March 7, 1989Assignee: Wear Management ServicesInventors: Richard S. Szereto, Richard O. Drossman
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Patent number: 4785142Abstract: A superconducting cable comprising an in-situ-formed type II superconductor, e.g. Nb.sub.3 Sn, in association with a stabilizing conductor both in heat transfer relationship with at least one passage adapted to carry liquified gaseous refrigerant. The conductor and said at least one passage are enclosed by a sheath comprising an alloy consisting essentially of about 49% nickel, about 4% chromium, about 3% niobium, about 1.4% titanium, about 1% aluminum, balance essentially iron.Type: GrantFiled: April 10, 1987Date of Patent: November 15, 1988Assignee: Inco Alloys International, Inc.Inventors: Darrell F. Smith, Jr., Bill L. Lake, Ronald G. Ballinger
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Patent number: 4711826Abstract: The present invention relates to iron-nickel alloys having improved glass sealing properties. Alloys of the present invention contain from about 30% to about 60% nickel, from about 0.5% to about 3% silicon, from about 0.5% to about 3.5% aluminum and the balance essentially iron. Preferably, the alloys have a total aluminum plus silicon content of less than about 4%. The alloys of the present invention have particular utility in electronic and electrical applications. For example, they may be used as a lead frame or a similar component in a semiconductor package.Type: GrantFiled: January 27, 1986Date of Patent: December 8, 1987Assignee: Olin CorporationInventors: Eugene Shapiro, Michael L. Santella
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Patent number: 4690711Abstract: A process for preparing an iron group sintered compact involves forming an admixture of an iron group metal alloy powder additive and iron powder wherein the melting point of the alloy additive is at least about 50.degree. C. lower than that of the iron, compacting the admixture to form a green compact, and sintering the green compact at a temperature of from about 20.degree. C. above the solidus to about 100.degree. C. above the liquidus of the alloy additive whereby a sintered compact is formed. A compact having an iron group alloy additive as a continuous phase and iron as a discontinuous phase wherein the continuous phase has a melting point of at least about 50.degree. C. lower than that of the discontinuous phase can be prepared at lower sintering temperatures than a typical iron powder.Type: GrantFiled: May 21, 1986Date of Patent: September 1, 1987Assignee: GTE Products CorporationInventor: Brian C. Coad
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Patent number: 4610437Abstract: There is provided a crucible for containing salt baths for the boriding of steels which has a high service life made of a steel which consists of (or consists essentially of) 0.05-0.8% carbon, 0.8-2.5% silicon, 0.1-2.0% manganese, 0-1.5% aluminum, 6-30% chromium, 4-39% nickel and the balance iron.Type: GrantFiled: July 12, 1984Date of Patent: September 9, 1986Assignee: Degussa AktiengesellschaftInventors: Ulrich Baudis, Peter Biberbach, Rainer Engelmann