Eight Percent Or More Manganese Containing Patents (Class 420/72)
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Patent number: 11674212Abstract: The present invention provides a cast product that can further enhance the stability of a barrier layer and can exhibit further superior oxidation resistance, carburization resistance, nitriding resistance, and corrosion resistance, when used under a high-temperature atmosphere, the cast product having a surface with a barrier layer comprising an Al-containing metal oxide expressed in (Al(1-x)M(x))2O3, where M is at least one of Cr, Ni, Si, and Fe, wherein the Al-containing metal oxide includes a solid solution of at least one of Cr, Ni, Si, and Fe with Al, in a relationship of Al/(Cr+Ni+Si+Fe)?2.Type: GrantFiled: October 4, 2021Date of Patent: June 13, 2023Assignee: KUBOTA CORPORATIONInventors: Kunihide Hashimoto, Shinichi Uramaru
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Patent number: 11505853Abstract: The present invention relates to a method for manufacturing a high strength and high toughness steel material which is mainly used at an extremely low temperature and used in various parts of ships for LNG transport and LNG fuel vehicles.Type: GrantFiled: December 21, 2017Date of Patent: November 22, 2022Assignee: POSCOInventor: Jin-Ho Bae
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Patent number: 10301707Abstract: Provided is a steel having excellent weldability and impact toughness in a welding zone comprising: by weight (wt.) %, carbon (C): 0.1% to 0.3%, manganese (Mn): 11% to 13%, iron (Fe) as a residual component thereof, and other inevitable impurities, and positive and negative segregation zones in a layered form. The positive segregation zone comprises austenite and epsilon martensite, and the negative segregation zone comprises, by area fraction, epsilon martensite of less than 5% and alpha martensite.Type: GrantFiled: December 26, 2013Date of Patent: May 28, 2019Assignee: POSCOInventors: Hak-Cheol Lee, In-Shik Suh, Yong-Jin Kim, In-Gyu Park
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Patent number: 10227681Abstract: A high manganese steel with improved wear and impact characteristics is disclosed. The steel includes a composition comprising, on a weight basis, 25-35 percent manganese, 0-9 percent aluminum, 0.9-2 percent carbon, 0.5-2 percent silicon, 0-1 percent molybdenum, less than 0.03 percent phosphorus, and less than 0.03 percent sulfur, with a balance of iron and incidental impurities.Type: GrantFiled: September 21, 2016Date of Patent: March 12, 2019Assignee: Caterpillar Inc.Inventor: Samuel August Buckholz
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Patent number: 10144982Abstract: Provided is a Fe—Mn—C-based twinning-induced plasticity (TWIP) steel which includes 13 wt % to 24 wt % of manganese (Mn), 0.4 wt % to 1.2 wt % of carbon (C), and iron (Fe) as well as other unavoidable impurities as a remainder, is manufactured by caliber rolling, has a microstructure including elongated grains that are elongated in a rolling direction, and has an average grain size of the elongated grains in a direction perpendicular to the rolling direction of 1 ?m or less.Type: GrantFiled: August 17, 2012Date of Patent: December 4, 2018Assignee: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Tae Kyung Lee, Chong Soo Lee, Seok Weon Song, Jae Hyung Kim, Kaneaki Tsuzaki, Motomichi Koyama
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Patent number: 9003641Abstract: A nickel strip is made from a starting material of solid cathode sheets having a minimum nickel content of 99.94% by weight and a maximum trace element content, in ppm by weight, of <35 carbon, <5 sulphur, <14 manganese, <11 magnesium, <11 aluminum, <25 titanium, and <15 silicon. The sheets are hot-rolled individually in a single layer/ply. The sheets are then joined to form the strip.Type: GrantFiled: February 4, 2011Date of Patent: April 14, 2015Inventor: Theodor Stuth
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Publication number: 20150040636Abstract: Provided is a rod wire and a steel wire for a spring having superior corrosion resistance, the rod wire and the steel wire comprising, by weight %, 0.45 to 0.6% of C, 17.0 to 25.0% of Mn, the remainder being Fe and other inevitable impurities. Also provided is a method for manufacturing a steel wire for a spring having superior corrosion resistance by drawing the rod wire, the steel wire having a tensile strength of 1800 to 2100 MPa and a reduction of area of 25% ore more. Also provided is a method for manufacturing a spring having superior corrosion resistance, comprising the steps of drawing the rod wire so as to obtain steel wire having a tensile strength 1800 to 2100 MPa and a reduction of area of 25% or more; and a step of cold-forming the steel wire at room temperature.Type: ApplicationFiled: December 20, 2012Publication date: February 12, 2015Inventors: Sang-Woo Choi, Soo-Dong Park
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Patent number: 8900511Abstract: The present invention relates a high-strength nonmagnetic stainless steel, containing, by weight percent, 0.01 to 0.06% of C, 0.10 to 0.50% of Si, 20.5 to 24.5% of Mn, 0.040% or less of P, 0.010% or less of S, 3.1 to 6.0% of Ni, 0.10 to 0.80% of Cu, 20.5 to 24.5% of Cr, 0.10 to 1.50% of Mo, 0.0010 to 0.0050% of B, 0.010% or less of O, 0.65 to 0.90% of N, and the remainder being Fe and inevitable impurities; the steel satisfying the following formulae (1) to (4): [Cr]+3.3×[Mo]+16×[N]?30??(1), {Ni}/{Cr}?0.15??(2), 2.0?[Ni]/[Mo]?30.0??(3), and [C]×1000/[Cr]?2.5??(4), wherein [Cr], [Mo], [N], [Ni], [Mo] and [C] represent the content of Cr, the content of Mo, the content of N, the content of Ni, the content of Mo and the content of C in the steel, respectively, and {Ni} represents the sum of [Ni], [Cu] and [N], and {Cr} represents the sum of [Cr] and [Mo]. The present invention further relates to a high-strength nonmagnetic stainless steel part containing the steel and a process for producing the same.Type: GrantFiled: May 2, 2008Date of Patent: December 2, 2014Assignee: Daido Tokushuko Kabushiki KaishaInventors: Koichi Ishikawa, Tetsuya Shimizu
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Publication number: 20140326849Abstract: A mechanical structure is provided with a crystalline superelastic alloy that is characterized by an average grain size and that exhibits a martensitic phase transformation resulting from a mechanical stress input greater than a characteristic first critical stress. A configuration of the superelastic alloy is provided with a geometric structural feature of the alloy that has an extent that is no greater than about 200 micrometers and that is no larger than the average grain size of the alloy. This geometric feature undergoes the martensitic transformation without intergranular fracture of the geometric feature.Type: ApplicationFiled: September 13, 2012Publication date: November 6, 2014Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Christopher A. Schuh, Jose M. San Juan, Ying Chen
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Publication number: 20140308156Abstract: Provided are a steel sheet for warm press forming that can have high strength, good elongation, and thus improved crashworthiness after being warm pressed, and a warm-pressed member formed of the steel sheet, and manufacturing methods thereof. The steel sheet for warm press forming includes, by weight %, C: 0.01% to 0.5%, Si: 3.0% or less (excluding 0%), Mn: 3% to 15%, P: 0.0001% to 0.1%, S: 0.0001% to 0.03%, Al: 3.0% or less (excluding 0%), N: 0.03% or less (excluding 0%), and the balance of Fe and inevitable impurities.Type: ApplicationFiled: November 5, 2012Publication date: October 16, 2014Inventors: Jin-Keun Oh, Kyoo-Young Lee, Yeol-Rae Cho, Eul-Yong Choi, Ki-Soo Kim
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Publication number: 20140271768Abstract: The invention provides medical devices comprising high-strength alloys which degrade over time in the body of a human or animal, at controlled degradation rates, without generating emboli and which have enhanced degradation due to the presence of a halogen component. In one embodiment the alloy is formed into a bone fixation device such as an anchor, screw, plate, support or rod. In another embodiment the alloy is formed into a tissue fastening device such as staple. In yet another embodiment, the alloy is formed into a dental implant or a stent.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: Bio DG, Inc.Inventors: Herbert RADISCH, Paul JABLONSKI
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Patent number: 8778097Abstract: A low specific gravity and high strength steel sheet includes C of 0.2% to 0.8%, Mn of 2% to 10%, P of 0.02% or less, S of 0.015% or less, Al of 3% to 15%, and N of 0.01% or less. A ratio of Mn/Al is 0.4 to 1.0. Retained austenite in a structure is included in the range of 1% or more. The steel sheet further includes one or two or more elements selected from the group consisting of Si of 0.1% to 2.0%, Cr of 0.1% to 0.3%, Mo of 0.05% to 0.5%, Ni of 0.1% to 2.0%, Cu of 0.1% to 1.0%, B of 0.0005% to 0.003%, Ti of 0.01% to 0.2%, Zr of 0.005% to 0.2%, Nb of 0.005% to 0.2%, W of 0.1% to 1.0%, Sb of 0.005% to 0.2%, and Ca of 0.001% to 0.2%.Type: GrantFiled: October 29, 2008Date of Patent: July 15, 2014Assignee: PoscoInventors: Kwang Geun Chin, Jai Hyun Kwak
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Patent number: 8753565Abstract: Hadfield steel and a method for obtaining the same, which steel has better mechanical properties than basic Hadfield steel, without detriment to any of them, which has a homogenous grain size distribution, thus allowing new applications, having the following chemical composition: 0.90 to 1.35% by weight of C, 11.00 to 14.00% by weight of Mn, 0.80% maximum by weight of Si, 0.07% maximum by weight of P, 0.05% maximum by weight of S and an amount of hafnium greater than or equal to 0.01% and less than 0.1% by weight, the rest being iron and impurities associated with iron, and where the percentages are expressed by weight with respect to the total weight of the steel.Type: GrantFiled: December 14, 2011Date of Patent: June 17, 2014Assignee: Fundacion Tecnalia Research & InnovationInventor: Patricia Caballero Oguiza
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Publication number: 20140097277Abstract: The invention relates to biodegradable iron alloy-containing compositions for use in preparing medical devices. In addition, biodegradable crystalline and amorphous compositions of the invention exhibit properties that make them suitable for use as medical devices for implantation into a body of a patient. The compositions include elemental iron and one or more elements selected from manganese, magnesium, zirconium, zinc and calcium. The compositions can be prepared using a high energy milling technique. The resulting compositions and the devices formed therefrom are useful in various surgical procedures, such as but not limited to orthopedic, craniofacial and cardiovascular.Type: ApplicationFiled: October 3, 2013Publication date: April 10, 2014Applicant: UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATIONInventors: PRASHANT N. KUMTA, SUNG JAE CHUNG, PARTHA SAHA, OLEG VELIKOKHATNYI, MONI KANCHAN DATTA, DAE HO HONG, DA-TREN CHOU
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Patent number: 8647450Abstract: A bead wire has a composition of Mn: 5-35 at % and Al: 5-20 at % and the remainder being Fe and inevitable impurities, in which a steel structure is an austenite single-phase structure, and achieves weight reduction and high ductility without reducing strength.Type: GrantFiled: February 22, 2007Date of Patent: February 11, 2014Assignee: Bridgestone CorporationInventors: Masami Kikuchi, Yukio Aoike, Takashi Yokoi
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Publication number: 20120263971Abstract: A composition comprises a binary alloy of iron and one of manganese, molybdenum, or vanadium, wherein the manganese, molybdenum, or vanadium is present in the binary alloy in an amount effective to form a conductive oxide on the binary alloy, the oxidation state of the manganese, the molybdenum, and the vanadium is greater than the oxidation state of iron in the conductive oxide, and the conductive oxide has a contact resistance of less than 5×104 milli-ohms measured in accordance with ASTM B667-97 (2009).Type: ApplicationFiled: October 7, 2011Publication date: October 18, 2012Applicant: UNIVERSITY OF CONNECTICUTInventors: Mark AINDOW, S. Pamir ALPAY, Joseph V. MANTESE
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Publication number: 20120160363Abstract: Provided are high manganese containing ferrous based components and their use in oil, gas and/or petrochemical applications. In one form, the components include 5 to 40 wt % manganese, 0.01 to 3.0 wt % carbon and the balance iron. The components may optionally include one or more alloying elements chosen from chromium, nickel, cobalt, molybdenum, niobium, copper, titanium, vanadium, nitrogen, boron and combinations thereof.Type: ApplicationFiled: December 21, 2011Publication date: June 28, 2012Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Hyun Woo Jin, Raghavan Ayer, Douglas Paul Fairchild, Mario L. Macia
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Publication number: 20120128524Abstract: Provided are a high-strength, high-manganese steel wire rod having excellent cold heading quality and not requiring spheroidizing and quenching-tempering treatments during manufacturing a bolt and a method of manufacturing a bolt using the steel wire rod. The method of manufacturing a steel wire rod includes heating a steel containing 12 to 25 wt % of Mn within a temperature range of 1100° C. to 1250° C., hot rolling the heated steel within a temperature range of 700° C. to 1100° C., and cooling the hot rolled steel to a temperature of 200° C. or less and cold caliber rolling or drawing to manufacture a steel wire rod.Type: ApplicationFiled: October 11, 2011Publication date: May 24, 2012Inventors: Young Soo CHUN, Chong Soo LEE, You Hwan LEE, Kyung Tae PARK, Tae Kyung LEE, Sung Hyuk PARK, Chan Hee PARK, Ji Soo KIM, Young Kook LEE
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METHOD FOR PRODUCING A HOT ROLLED STRIP AND HOT ROLLED STRIP PRODUCED FROM TRIPLEX LIGHTWEIGHT STEEL
Publication number: 20120121452Abstract: The invention relates to a method for producing a hot strip from a triplex lightweight steel, wherein a melt is cast into a roughed strip and the latter is subsequently rolled into a hot strip. For this purpose, it is provided that the melt is cast in a horizontal strip casting facility under conditions of a calm flow and free of bending into a roughed strip in the range between 6 and 20 mm and is subsequently rolled into hot strip having a degree of deformation of at least 50%.Type: ApplicationFiled: March 11, 2009Publication date: May 17, 2012Applicant: SALZGITTER FLACHSTAHL GMBHInventors: Karl-Heinz Spitzer, Bianca Springub, Joachim Konrad, Hellfried Eichholz, Markus Schäperkötter, Zacharias Georgeou -
Publication number: 20120045358Abstract: Provided is a high manganese nitrogen-containing steel sheet. The high manganese nitrogen-containing steel sheet according to the present invention comprises 0.5 to 1.0 wt % of carbon, 10 to 20 wt % of manganese, 0.02 to 0.3 wt % of nitrogen, with a remainder of Fe and unavoidable impurities. The high manganese nitrogen-containing steel sheet according to the present invention produces an austenite phase at room temperature, in which the stacking fault energy is effectively controlled by adding chrome and nitrogen. Accordingly, the high manganese nitrogen-containing steel sheet of the present invention produces a mechanical twin during the plastic deformation of the steel sheet, thereby increasing the work hardening rate, tensile strength, and workability.Type: ApplicationFiled: April 27, 2010Publication date: February 23, 2012Applicant: HYUNDAI STEEL COMPANYInventors: Young Kook Lee, Yeon Seung Jung, Sin Gon Kang, Dong Joon Min
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Publication number: 20110308673Abstract: A hot-rolled austenitic manganese steel strip having a chemical composition in percent by weight of 0.4%?C?1.2%, 12.0%?Mn?25.0%, P?0.01% and Al?0.05% has a product of elongation at break in % and tensile strength in MPa of above 65,000 MPa %, in particular above 70,000 MPa %. A cold-rolled austenitic manganese steel strip having the same chemical composition achieves a product of elongation at break in % and tensile strength in MPa of above 75,000 MPa %, in particular above 80,000 MPa %.Type: ApplicationFiled: May 11, 2011Publication date: December 22, 2011Applicant: voestalpine Stahl GmbHInventors: Reinhold Schneider, Ludovic Samek, Enno Arenholz, Klemens Mraczek, Mario Hartl
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Patent number: 8052924Abstract: There is provided a high strength steel plate with high manganese having excellent burring workability, which is used for structural members, bumper reinforcing materials and impact absorbing materials of automobiles, etc. The high strength steel plate includes, by weight: C: 0.2 to 1.0%, Mn: 10 to 25%, Al: 0.3 to 3.0%, S: 0.05% or less, P: 0.05% or less, and the balance of Fe and inevitable impurities, wherein the chemical elements satisfactorily have a grain size of 18 ?m or more. The high strength steel plate can be useful to facilitate formation of automobile parts since it has excellent physical properties such as elongation and hole expansibility as well as strength.Type: GrantFiled: December 20, 2007Date of Patent: November 8, 2011Assignee: PoscoInventors: Sung Kyu Kim, Kwang Geun Chin
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Publication number: 20110076176Abstract: Methods of forming a compressor article such as a cast airfoil, a stator, a blade, a gas turbine, and a gas turbine shell via casting are presented. The methods include: preparing an iron-manganese-aluminum-silicon-carbon (Fe—Mn—Al—Si—C) based alloy; casting the Fe—Mn—Al—Si—C based alloy, wherein a cast has a shape of the compressor article; and performing post-casting finishing thereby forming the compressor article.Type: ApplicationFiled: September 28, 2009Publication date: March 31, 2011Applicant: GENERAL ELECTRIC COMPANYInventor: Junyoung Park
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Publication number: 20100253006Abstract: A steel product having a composition which contains by mass C: 0.01 to 1.9%, Si: 0.01 to 1.9%, Mn: 5.0 to 24.0% with balance consisting of Fe and unavoidable impurities and a steel product described above which further contains Cr: 18.0% or below and/or Ni: 12.0% or below in addition to the above essential elements. The above steel products may each further contain Al: 1% or below and/or N: 0.3% or below and the above steel products may each further contain one or more elements selected from among Nb, Ti, Zr, Mo and Cu in a total amount of 4.0% or below. The steel products can sufficiently follow the thermal expansion of a cylinder made of an aluminum alloy and thus enables the production of a piston ring which is suitable for use as a piston ring to slide on the inner face of a cylinder bore made of an aluminum alloy in an internal combustion engine and which can retain excellent sealing properties.Type: ApplicationFiled: November 28, 2008Publication date: October 7, 2010Applicant: NIPPON PISTON RING CO., LTDInventors: Yoshiki Ishikawa, Seisuke Takaki, Motonobu Onoda
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Patent number: 7799148Abstract: Iron-carbon-manganese austenitic steel sheet, the chemical composition of which comprises, the contents being expressed by weight: 0.45%?C?0.75%; 15%?Mn?26%; Si?3%; Al?0.050%; S?0.030%; P?0.080%; N?0.1%; at least one metal element chosen from vanadium, titanium, niobium, chromium and molybdenum, where 0.050%?V?0.50%; 0.040%?Ti?0.50; 0.070%?Nb?0.50%; 0.070%?Cr?2%; 0.14%?Mo?2%; and, optionally, one or more elements chosen from 0.0005%?B?0.003%; Ni?1%; Cu?5%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the amounts of said at least one metal element in the form of precipitated carbides, nitrides or carbonitrides being: 0.030%?Vp?0.150%; 0.030%?Tip?0.130%; 0.040%?Nbp?0.220%; 0.070%?Crp?0.6%; 0.14%?Mop?0.44%.Type: GrantFiled: January 10, 2006Date of Patent: September 21, 2010Assignee: Arcelor FranceInventors: Colin Scott, Philippe Cugy, Maurita Roscini, Anne Dez, Dominique Cornette
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Patent number: 7794552Abstract: A hot-rolled austenitic iron/carbon/manganese steel sheet, the strength of which is greater than 1200 MPa, the product P (strength (in MPa)×elongation at break (in %)) of which is greater than 65 000 MPa % and the nominal chemical composition of which comprises, the contents being expressed by weight: 0.85%?C?1.05%; 16%?Mn?19%; Si?2%; Al?0.050%; S?0.030%; P?0.050%; N?0.1%, and, optionally, one or more elements chosen from: Cr?1%; Mo?0.40%; Ni?1%; Cu?5%; Ti?0.50%; Nb?0.50%; V?0.50%, the rest of the composition consisting of iron and inevitable impurities resulting from the smelting, the recrystallized surface fraction of said steel being equal to 100%, the surface fraction of precipitated carbides of said steel being equal to 0% and the mean grain size of said steel being less than or equal to 10 microns.Type: GrantFiled: November 4, 2005Date of Patent: September 14, 2010Assignee: Arcelor FranceInventors: Philippe Cugy, Nicolas Guelton, Colin Scott, Francois Stouvenot, Marie-Christine Theyssier
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Publication number: 20100143178Abstract: An RE-containing alloy, which is represented by a compositional formula of RrTtAa (wherein R represents at least one rare earth element selected from among La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Tm, Yb, Gd, and Lu; T collectively represents transition metal elements containing at least Fe atoms, a portion of the Fe atoms being optionally substituted by at least one species selected from among Co, Ni, Mn, Pt, and Pd; A represents at least one element selected from among Al, As, Si, Ga, Ge, Mn, Sn, and Sb; and r, t, and a have the following relationships: 5.0 at. %?r?6.8 at. %, 73.8 at. %?t?88.7 at. %, and 4.6 at. %?a?19.4 at. %) and having an alloy microstructure containing an NaZn13-type crystal structure in an amount of at least 85 mass % and ?-Fe in an amount of 5-15 mass % inclusive.Type: ApplicationFiled: February 17, 2010Publication date: June 10, 2010Applicant: Showa Denko K.K.Inventor: Kenichiro NAKAJIMA
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Publication number: 20100140439Abstract: A mechanical structure is provided with a crystalline superelastic alloy that is characterized by an average grain size and that is characterized by a martensitic phase transformation resulting from a mechanical stress input greater than a characteristic first critical stress. A configuration of the superelastic alloy is provided with a geometric structural feature of the alloy that has an extent that is no greater than about 200 micrometers and that is no larger than the average grain size of the alloy. This geometric feature is configured to accept a mechanical stress input.Type: ApplicationFiled: July 8, 2009Publication date: June 10, 2010Applicant: Massachusetts Institute of TechnologyInventors: Christopher A. Schuh, Jose M. San Juan, Ying Chen
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Publication number: 20090317284Abstract: There is provided a high strength steel plate with high manganese having excellent burring workability, which is used for structural members, bumper reinforcing materials and impact absorbing materials of automobiles, etc. The high strength steel plate includes, by weight: C: 0.2 to 1.0%, Mn: 10 to 25%, Al: 0.3 to 3.0%, S: 0.05% or less, P: 0.05% or less, and the balance of Fe and inevitable impurities, wherein the chemical elements satisfactorily have a grain size of 18 ?m or more. The high strength steel plate can be useful to facilitate formation of automobile parts since it has excellent physical properties such as elongation and hole expansibility as well as strength.Type: ApplicationFiled: December 20, 2007Publication date: December 24, 2009Applicant: POSCOInventors: Sung Kyu Kim, Kwang Geun Chin
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Publication number: 20090202382Abstract: A high-ductility, high-strength and high Mn steel strip used for steel strips of automobiles requiring superior formability and high strength, a plated steel strip produced by using the same, and a manufacturing method thereof are disclosed. The high Mn steel strip comprises, by weight %, 0.2˜1.5% of C, 10˜25% of Mn, 0.01˜3.0% of Al, 0.005˜2.0% of Si, 0.03% or less of P, 0.03% or less of S, 0.040% or less of N, and the balance of Fe and other unavoidable impurities. The high-ductility, high-strength and high Mn steel strip, and the plated steel strip produced by using the same have superior surface properties and plating characteristics.Type: ApplicationFiled: December 22, 2006Publication date: August 13, 2009Applicant: POSCOInventors: Seong-Ju Kim, Kwang-Geun Chin, Hyun-Gyu Hwang, Sung-Kyu Kim, Il-Ryoung Sohn, Young-Kook Lee, Oh-Yeon Lee
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Publication number: 20090196785Abstract: A transformable lightweight structural steel, which exhibits a resistance to hydrogen embrittlement, has TRIP and TWIP properties and contains the following elements (in wt.-%): C 0.05 to <=1.0; Al 0.0 to <=11.0; Si 0.0 to <=6.0; Al+Si>0.05; Mn 9.0 to =25.0; H<20 ppm, the remainder being iron including incidental steel companion elements, whereby different phases are present depending on the alloy composition. The lightweight structural steel is characterized by associating a higher C content with a lower Mn content and associating a low C content with a higher Mn content, with the C—Mn value pairs being positioned in a C—Mn coordinate system approximately on a straight connecting line that is distant from the connecting line of the C—Mn value pairs being in balance between the austenite and martensite phases.Type: ApplicationFiled: November 22, 2006Publication date: August 6, 2009Applicant: Salzgitter Flachstahl GmbHInventors: Karl-Heinz Spitzer, Hellfried Eichholz, Bianca Springub, Rune Schmidt-Jürgensen, Markus Schäperkötter
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Publication number: 20090198320Abstract: An implant having a base body comprising entirely or in part a biocorrodible iron alloy wherein the base body of the implant comprises at least one of the following: (i) a biocorrodible iron alloy of formula (1): Fe—P where the amount of P in the alloy is from 0.Type: ApplicationFiled: February 5, 2009Publication date: August 6, 2009Applicant: BIOTRONIK VI PATENT AGInventors: Heinz Mueller, Joerg Loeffler, Peter Uggowitzer
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Publication number: 20090010793Abstract: A method for producing cold-formable, high-strength steel strips or sheets with TWIP properties, wherein in successive working steps are carried out without interruption, uses a molten material of the following composition (mass %): C: 0.003-1.50%, Mn: 18.00-30.00%, Ni: ?10.00%, Si: ?8.00%, Al: ?10.00%, Cr: ?10.00%, N: ?0.60%, Cu: ?3.00%, P: ?0.40%, S: ?0.15%, selectively one or more components from the Se, Te, V, Ti, Nb, B, REM, Mo, W, Co, Ca and Mg group provided that the total content of Se, Te is ?0.25%, the total content of V, Ti, Nb, B, REM is ?4.00%, the total content of Mo, W, Co is ?1.50% and the total content of Ca, Mg is ?0.50%, the rest being iron and melting conditioned impurities, wherein the content of Sn, Sb, Zr, Ta and As, whose total content is equal to or less than 0.30% is included in said impurities.Type: ApplicationFiled: November 3, 2004Publication date: January 8, 2009Applicant: THYSSENKRUPP STEEL AGInventors: Jens-Ulrik Becker, Harald Hofmann, Manfred Menne, Jochen Wans
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Publication number: 20070209738Abstract: The present invention relates to a high strength and high toughness alloy with a low density and the method of making thereof. The alloy essentially comprises 15 to 33 wt % of manganese, 6 to 10 wt % of aluminum, 0.6 to 1.2 wt % of carbon, 0.1 to 1.0 wt % of silicon, and the balance of iron. The alloy has excellent properties of a density of 6.6 to 6.9 g/cm3, an elongation of 25 to 70%, and a tensile strength of 100 to 190 ksi. In particularly, and the alloy is useful for golf club heads with excellent properties. Further, the use of the alloy reduces pits and defects generated during the electroplating process of the heads. Therefore, the defect rate of the product is remarkably decreased so that the cost is reduced.Type: ApplicationFiled: October 23, 2006Publication date: September 13, 2007Applicant: National Chiao Tung UniversityInventors: Tzeng-Feng Liu, Jian-Wei Lee
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Patent number: 6908589Abstract: The purpose of the present invention is to provide high manganese cast iron containing spheroidal vanadium carbide and method for making which is nonmagnetic as well as superior mechanical properties such as wear-resistance and toughness, and further does not require a water toughing heat treatment which has been needed when nonmagnetic high manganese steel (high manganese cast steel) is obtained by crystallized spheroidal vanadium in austenite matrix, and the high manganese cast iron containing spheroidal vanadium carbide is comprised of C 1.5˜4.0 weight %, V 6˜15 weight %, Si 0.2˜4.0 weight %, Mn 10˜18 weight %, Mg 0.01˜0.1 weight %, remaining iron (Fe) and inevitable impurities, spheroidal vanadium carbide is crystallized within a structure.Type: GrantFiled: June 13, 2003Date of Patent: June 21, 2005Assignees: Osaka Prefecture, Kabushiki Kaisha Sankyogokin Chuzoasho, Okamoto Co., Ltd.Inventors: Tadashi Kitudo, Mamoru Takemura, Mituaki Matumuro, Hideto Matumoto, Takao Horie, Kazumichi Shimizu
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Publication number: 20020048529Abstract: An austenitic manganese steel microalloyed with nitrogen, vanadium and titanium used for castings such as mantles, bowls and jaws manufactured as wear components of crushers in the mining and aggregate industries, hammers used in scrap shredders, frogs and switches used in railway crossings and buckets and track shoes used in mining power shovels. These novel compositions exhibit a fine grain size having carbonitride precipitates that result in castings having a wear life 20-70% longer than prior art castings. The austenitic manganese steel includes, in weight percentages, the following: about 11.0% to 24.0% manganese, about 1.0% to 1.4% carbon, up to about 1% silicon, up to about 1.9% chromium, up to about 0.25% nickel, up to about 1.0% molybdenum, up to about 0.2% aluminum, up to about 0.25% copper, phosphorus and sulfur present as impurities in amounts of about 0.07% max and about 0.06% max. respectively, microalloying additions of titanium in the amounts of about 0.020-0.Type: ApplicationFiled: August 17, 2001Publication date: April 25, 2002Applicant: The Frog Switch and Manufacturing CompanyInventors: Jerzy W. Kucharczyk, Karl R. Funk, Bernd Kos
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Patent number: 6270593Abstract: Mn alloy materials for magnetic materials contain 500 ppm or less, preferably 100 ppm or less, oxygen, 100 ppm or less, probably 20 ppm or less, sulfur, and preferably a total of 1000 ppm or less, more preferably 500 ppm or less, impurities (elements other than Mn and the alloying component). The alloying component that forms an alloy with Mn is one or two or more elements selected from the group consisting of Fe, Ir, Pt, pd, Rh, Ru, Ni, Cr and Co. Sputtering targets formed from the Mn alloy materials for use in depositing magnetic thin film, and the thin films so produced.Type: GrantFiled: July 28, 1998Date of Patent: August 7, 2001Assignee: Japan Energy CorporationInventors: Yuichiro Shindo, Tsuneo Suzuki
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Patent number: 5968449Abstract: An object of the present invention is to provide an iron base Si--Mn alloy or an iron base Si--Mn--Ni alloy which can be easily crushed and can be manufactured in large quantity, and alloy powder thereof.An iron base Si--Mn--Ni alloy having good crushability and alloy powder thereof, comprising:C: 0.40 to 1.20% by weight,Si: 5.0 to 12.0% by weight,Mn: 19.0 to 42.0 % by weight, or Ni: not more than 30% by weight, and the balance being Fe, with the following equations satisfied: Si.gtoreq.11.89-2.92 C-0.077 Mn, Vickers hardness (Hv).gtoreq.550, and area ratio of dendrite structure .ltoreq.50%.An iron base Si--Mn--Ni alloy having good crushability and alloy powder thereof, comprising:C: 0.40 to 1.20% by weight,Si: 5.0 to 12.0% by weight,Mn: 19.0 to 42.0% by weight, or Ni: not more than 30% by weight, and the balance being Fe, with the following equations satisfied: Si.ltoreq.8.3 C+0.14 Mn, and relative permeability (.mu.).ltoreq.1.10.Type: GrantFiled: January 20, 1998Date of Patent: October 19, 1999Assignees: Nippon Steel Welding Products & Engineering Co., Ltd., Japan Metals & Chemicals Co., Ltd.Inventors: Koichi Aoki, Atsuo Onoda, Masao Kamada, Hitoshi Nishimura, Kuniteru Suzuki, Shunji Kikuchi
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Patent number: 5910285Abstract: The invention relates to an Al--Mn--Si--N stainless acid-resisting steel substantially free of both Cr and Ni elements, which comprises the following elements: 0.06-0.12 C, 4-5 Al, 16-18 Mn, 1.2-1.5 Si, 0.15-0.30 N, 0.1-0.2 Re and the balance Fe. The corrosion resistance and mechanical properties of the steel can be further improved by adding a small amount of element(s) selected from the group consisting of Cr, Ni, Co, Ti, Nb, Cu, Mo, Zr, Hf, W and the like. The stainless steel has good corrosion resistance, pressure processing characteristics and welding performance, which can be made into a variety of stainless steel product and can be used in a broad field.Type: GrantFiled: February 18, 1998Date of Patent: June 8, 1999Inventor: Xuesheng Zhao
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Patent number: 5891388Abstract: An Fe--Mn Vibration Damping alloy steel having a superior tensile strength is disclosed. The alloy steel consists of, by weight percent: 10 to 24% of Manganese(Mn); up to 0.2% of carbon(C); at least one element selected from the group consisting of 0.1 to 2.0% of Titanium(Ti), 0.1 to 2.0% of Molybdenium(Mo), 0.1 to 1.0% of Vanadium(V), and 0.1 to 0.7% of Tungsten(W), the element increasing a tensile strength of the vibration damping alloy steel; and remaining iron(Fe) and incidental impurities. Further, an Fe--Mn vibration damping alloy steel having a good corrosion resistance is disclosed. The alloy steel consists of, by weight percent: 10 to 24% of Manganese(Mn); up to 0.2% of carbon(C); at least one element selected from the group consisting of 0.1 to 4.5% of Chromium(Cr), 0.1 to 1.5% of Copper(Cu), and 0.1 to 1.1% of Niobium (Nb), the element increasing a corrosion resistance of the vibration damping alloy steel; and remaining iron (Fe) and incidental impurities.Type: GrantFiled: November 13, 1997Date of Patent: April 6, 1999Assignee: Woojin Inc.Inventors: Seung-Han Baik, Yong-Chul Son, Jung-Chul Kim, Dong-Woon Han
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Patent number: 5843370Abstract: A ferritic stainless steel consisting essentially of, in terms of weight %, not greater than 0.005% of C, not greater than 0.008% of N with the proviso that the sum of C and N is not greater than 0.009%, not greater than 0.45% of Si, not greater than 1% of Mn, 10 to 12.5% of Cr, 0.05 to 0.3% of Nb, 8.times.(C+N) to 0.3% of Ti, and the balance consisting of Fe and unavoidable impurities is produced. A ferritic stainless steel for use in exhaust system equipment for cars, which can be produced at a low finish annealing temperature and is excellent in both formability at an ordinary temperature and in high temperature strength, can be provided.Type: GrantFiled: October 29, 1997Date of Patent: December 1, 1998Assignee: Nippon Steel CorporationInventors: Yuji Koyama, Akihiko Takahashi, Tetsuya Shimada, Nobuhiro Fujita, Shigeru Maeda
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Patent number: 5529604Abstract: The present invention relates to a modified stainless steel powder composition from which moldings can be formed. The modified stainless steel powder composition comprises from about 1% to about 3% by weight of tin, from about 0.5% to about 1.5% by weight of an additive consisting essentially of from about 2% to about 30% by weight tin and the balance consisting essentially of at least one element selected from copper and nickel, and the balance essentially a stainless steel powder. A process for forming the modified stainless steel powder composition is also described.Type: GrantFiled: March 28, 1995Date of Patent: June 25, 1996Assignee: AMETEK, Specialty Metal Products DivisionInventor: John H. Reinshagen
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Patent number: 5425820Abstract: An oriented magnetic steel sheet with a very low core loss and a process for manufacturing it at a lower cost are disclosed. The steel sheet consists essentially of Si: greater than 3.0% and at most 6.0%, Mn: greater than 2.0% and at moat 8.0%, sol. Al: 0.003-0.015%, with Si (%)-0.5.times.Mn (%).ltoreq.2.0 and the balance being Fe and incidental impurities, The amounts of C, N, and S as impurities are respectively at most 0.005%, at most 0.006%, and at most 0.01%. This steel sheet can be produced from a slab containing up to 0.01% C., up to 0.01% S and 0.001-0.010% N by (i) hot rolling the slab to obtain a hot-rolled steel sheet, (ii) cold rolling the hot-rolled steel sheet, as hot-rolled or after being subsequently annealed, one or more times with an intermediate annealing performed between successive stages of cold rolling to prepare a cold-rolled sheet, (iii) causing primary recrystallization by continuous annealing of the cold-rolled sheet, and (iv) finish annealing the continuously annealed steel sheet.Type: GrantFiled: January 8, 1993Date of Patent: June 20, 1995Assignee: Sumitomo Metal Industries, Ltd.Inventors: Hiroyoshi Yashiki, Teruo Kaneko, Takashi Tanaka
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Patent number: 5114669Abstract: A ferromagnetic material having the formula MGa.sub.2-x As.sub.x where 0.15.ltoreq.x.ltoreq.0.99 and M represents one of Fe.sub.3, Fe.sub.3 partially substituted by manganese or Fe.sub.3 partially substituted by cobalt.Type: GrantFiled: December 13, 1990Date of Patent: May 19, 1992Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventors: Brian Cockayne, William R. MacEwan, Ivor R. Harris, Nigel A. Smith
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Patent number: 5082748Abstract: An Fe-Mn steel sheet plated with an electrodeposited lower layer of Zn or a Zn alloy and as an upper layer at least 0.5 g/mn.sup.2 of an Fe-Mn alloy with a manganese content of no more than 60% by weight, electrodeposited on the lower layer, has improved corrosion resistance.Type: GrantFiled: December 29, 1989Date of Patent: January 21, 1992Assignees: Pohang Iron & Steel Co., Ltd., Research Institute of Industrial Science & TechnologyInventors: Duk S. Ahn, Jae R. Lee, Chan S. Park
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Method of using an austenitic steel alloy as a wear part subject to gouging abrasion type metal loss
Patent number: 5069871Abstract: A method of producing a crusher wear part and the like subject to gouging abrasion type metal loss wherein the part is made of a modified austenitic (Hadfields) manganese steel having an Aluminum/Carbon ratio of 1.0 to 1.7, the casting being heat treated by heating to 2000.degree.-2050.degree. F. followed by a water quench to provide gouging abrasion resistance at least about 10% higher than that of Hadfields.Type: GrantFiled: May 2, 1990Date of Patent: December 3, 1991Assignee: ESCO CorporationInventor: William E. Fuller -
Patent number: 4944814Abstract: An austenitic steel alloy has a composition of about 6 to 13 percent aluminum, 20 to 34 percent manganese, 0.2 to 1.4 percent carbon, 0.4 to 1.3 percent silicon, and the balance essentially iron. The relative quantities of the foregoing elements are selected from these ranges to produce a volume percent of ferrite structure in the alloy in the range of about 1 percent to about 8 percent. The volume percent of ferrite is determined by the empirical formula1<VPF=32+2.6(Al %.+-.0.08)+5.2(Si %.+-.0.03)-1.6 (Mn %.+-.0.16)-8.5 (C %.+-.0.03)<8Excluded from the range of alloys of this invention are alloys of the composition (30.+-.1) % Mn, (9.+-.0.35) % Al, (1.+-.0.05) % Si and (1.+-.0.05) % C, with the balance being iron.Type: GrantFiled: August 31, 1989Date of Patent: July 31, 1990Assignee: Ipsco Enterprises, Inc.Inventors: James M. Zimmer, William D. Bailey
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Patent number: 4875933Abstract: This invention describes the melting of Fe-Mn-Al Alloys and includes production methods such as non-continuous casting, continuous casting, hot forging, hot rolling, cold rolling, surface finishing, and heat treating. Products produced using one or more of the above said methods include case ingot, billet, bloom, slab, cast piece, hot-rolled plate, hot-rolled coil, bar, rod, cold-rolled strip and sheet, and hot-forged piece. The said alloys consist principally of by weight 10 to 35 percent Mn, 4 to 12 percent Al, 0 to 12 percent Cr, 0.01 to 1.4 percent C, 0.3-1.5 Mo, 0.1-1% S, a small amount of Cu, Nb, V, CO, Ti, B, N, Zr, Hf, Ta, Sc, W, and Ni, and the balanced Fe.Type: GrantFiled: July 8, 1988Date of Patent: October 24, 1989Assignee: Famcy Steel CorporationInventor: Chi-Meen Wan
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Patent number: 4855105Abstract: A wear-resistant steel contains carbon, manganese, silicon, sulphur, phosphorus, nitrogen, titanium, and iron with the following proportions of these components in weight %:______________________________________ Carbon 0.4-1.3 Manganese 3-11.5 Sulphur up to 0.5. Phosphorus up to 0.1 Titanium 0.01-0.15 Nitrogen 0.02-0.9 Iron the balance.Type: GrantFiled: September 3, 1987Date of Patent: August 8, 1989Assignee: Belorussky Tekhnologichesky Institut Imeni S.M. KirovaInventors: Nikolai A. Svidunovich, Leonid I. Parfenov, Alexandr I. Garost, Gennady A. Sorokin, Viktor N. Volkov, Viktor A. Obiedkov, Valery K. Karbanovich, Vladimir V. Vashkevich, Alexandr N. Verbitsky
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Patent number: 4847046Abstract: A new Fe-Mn-Al-C-Nb-Si-Cu alloy for use in ultra-low temperature materials is provided. The alloy has the following composition: 25 to 35 percent by weight manganese, 2 to 10 percent by weight aluminum, 0.1 to 0.8 percent by weight carbon, 0.01 to 0.2 percent by weight niobium, 0.05 to 0.5 percent by weight silicon, 0.05 to 1.0 percent by weight copper and the balance of iron. The alloy is manufactured by controlled rolling the ingot containing the elemental constituents, and has a tensile strength of above 350 MPa, an elongation of 40%, and a toughness of above 100 joules at -196.degree. C.Type: GrantFiled: September 2, 1986Date of Patent: July 11, 1989Assignee: Korea Advanced Institute of Science and TechnologyInventors: Young-Gil Kim, Jae-Kwang Han