Class / Patent application number | Description | Number of patent applications / Date published |
420072000 | Eight percent or more manganese containing | 24 |
20090196785 | Transformable Lightweight Structural Steel - 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. | 08-06-2009 |
20090317284 | HIGH STRENGTH STEEL PLATE WITH HIGH MANGANESE HAVING EXCELLENT BURRING WORKABILITY - 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 μm 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. | 12-24-2009 |
20100143178 | ALLOY CONTAINING RARE EARTH ELEMENT, PRODUCTION METHOD THEREOF, MAGNETOSTRICTIVE DEVICE, AND MAGNETIC REFRIGERANT MATERIAL - An RE-containing alloy, which is represented by a compositional formula of R | 06-10-2010 |
20110076176 | CAST COMPRESSOR ARTICLES AND METHODS OF FORMING SAME - 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. | 03-31-2011 |
20120121452 | METHOD FOR PRODUCING A HOT ROLLED STRIP AND HOT ROLLED STRIP PRODUCED FROM TRIPLEX LIGHTWEIGHT STEEL - 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%. | 05-17-2012 |
20120128524 | STEEL WIRE ROD HAVING EXCELLENT COLD HEADING QUALITY AND HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD OF MANUFACTURING THE SAME, AND MEHOD OF MANUFACTURING BOLT USING THE SAME - 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. | 05-24-2012 |
20160201155 | METHOD FOR MANUFACTURING A COMPONENT CONTAINING AN IRON ALLOY MATERIAL | 07-14-2016 |
420073000 | Nickel containing | 8 |
20080240969 | High Strength Hot Rolled Steel Sheet Containing High Mn Content with Excellent Workability and Method for Manufacturing the Same - A hot rolled steel sheet used for a bumper reinforceing material or for an impact absorption material in a door of automobiles, and a method for manufacturing the same are disclosed. The steel sheet comprises, by weight%, C: 0.2%˜1%, Mn: 8˜15%, S: 0.05% or less, P: 0.03% or less, and the balance of Fe and other unavoidable impurities. A product of tensile strength and total elongation (TS×ToLEl) of the steel sheet is 24,000 MPa % or more. The method provides a high strength hot rolled steel sheet, which has a high strength-elongation balance value, ensuring excellent workability. | 10-02-2008 |
20120070330 | HIGH-STRENGTH STEEL SHEET AND THE METHOD FOR PRODUCTION THEREFOR - A high-strength steel sheet comprises, by weight, not less than 0.25% and not more than 0.5% of C, not less than 4% and not more than 14% of Mn, not less than 6.5% and not more than 9.5% of Cr, and not less than 0.3% and not more than 3% of Si. The high-strength steel sheet satisfies the following formulas 1 and 2 and mainly consists of austenite, and the high-strength steel sheet has yield strength of not less than 1000 MPa and total elongation of not less than 20%. | 03-22-2012 |
20140308156 | STEEL SHEET FOR WARM PRESS FORMING, WARM-PRESSED MEMBER, AND MANUFACTURING METHODS THEREOF - 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. | 10-16-2014 |
20150078954 | METHOD OF PRODUCING AUSTENITIC IRON/CARBON/MANGANESE STEEL SHEETS HAVING A HIGH STRENGTH AND EXCELLENT TOUGHNESS AND BEING SUITABLE FOR COLD FORMING AND SHEETS THUS PRODUCED - A cold-rolled austenitic iron/carbon/manganese steel sheet is provided. The strength of which is greater than 950 MPa, the product (strength (in MPa)×elongation at fracture (in %)) of which is greater than 45000 and the chemical composition of which includes, the contents being expressed by weight 0.5%≦C≦0.7%, 17%≦Mn≦24%, Si≦3%, Al≦0.050%, S≦0.030%, P≦0.080% and N≦0.1%. A remainder of the composition includes iron and inevitable impurities resulting from the smelting. A recrystallized fraction of the structure of the steel is greater than 75%, a surface fraction of precipitated carbides of the steel is less than 1.5% and a mean grain size of the steel is less than 6 microns. A reinforcing element is also provided. | 03-19-2015 |
20150078955 | METHOD OF PRODUCING AUSTENITIC IRON/CARBON/MANGANESE STEEL SHEETS HAVING A HIGH STRENGTH AND EXCELLENT TOUGHNESS AND BEING SUITABLE FOR COLD FORMING, AND SHEETS THUS PRODUCED - A hot-rolled austenitic iron/carbon/manganese steel sheet is provided. The strength of which is greater than 900 MPa, the product (strength (in MPa)×elongation at fracture (in %)) of which is greater than 45000 and the chemical composition of which includes, the contents being expressed by weight 0.5%≦C≦0.7%, 17%≦Mn≦24%, Si≦3%, Al≦0.050%, S≦0.030%, P≦0.080% and N≦0.1%. A remainder of the composition includes iron and inevitable impurities resulting from the smelting. A recrystallized fraction of the structure of the steel is greater than 75%, a surface fraction of precipitated carbides of the steel is less than 1.5% and a mean grain size of the steel is less than 18 microns. A reinforcing element is also provided. | 03-19-2015 |
20160138146 | METHOD FOR PRODUCING AN ENERGY-STORING CONTAINER MADE OF LIGHTWEIGHT STEEL - An energy-storing container is made of a lightweight steel having the following chemical composition (in wt %): C 0.04-2%; Mn 14-30%; Al 1.5-12%; Si 0.3-3%; Cr 0.12-6%, and additionally one or more of the following elements: Ti, V, Nb, B, Zr, Mo, Ni, Cu, W, Co, P, N, each at up to 5% and in total at up to 10%, wherein the remainder is Fe including common steel tramp elements, wherein the concrete alloy composition is selected in order to limit the α′-martensite fraction before or after a forming process to no more than 3%, with the stipulation that the α′-martensite equivalent according to 0.1*wt % Mn wt % C 0.05*wt % Si is between 3.4 and 10.5. | 05-19-2016 |
20180021895 | FIELD GIRTH WELDING TECHNOLOGY FOR HIGH MANGANESE STEEL SLURRY PIPELINES | 01-25-2018 |
20180023171 | STEEL SHEET FOR WARM PRESS FORMING, WARM-PRESSED MEMBER, AND MANUFACTURING METHODS THEREOF | 01-25-2018 |
420074000 | Chromium containing | 7 |
20080226490 | Low-density alloy and fabrication method thereof - A low-density alloy and the fabrication method thereof are disclosed. The alloy comprises, in weight percent, equal to or greater than 15 wt. % but lower than or equal to 22.5 wt. % manganese, equal to or greater than 7.2 wt. % but lower than or equal to 9.0 wt. % aluminum, equal to or greater than 5.1 wt. % but lower than or equal to 7.8 wt. % chromium, equal to or greater than 0.6 wt. % but lower than or equal to 1.2 wt. % carbon and the balance of iron. The golf-club head made from the abovementioned alloy can obtain superior elongation, strength, damping capacity, and corrosion resistance even without any hot/cold working process, such as forging, rolling, etc.; therefore, the fabrication cost thereof can be obviously reduced. | 09-18-2008 |
20090202382 | HIGH MANGANESE STEEL STRIPS WITH EXCELLENT COATABILITY AND SUPERIOR SURFACE PROPERTY, COATED STEEL STRIPS USING STEEL STRIPS AND METHOD FOR MANUFACTURING THE STEEL STRIPS - 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. | 08-13-2009 |
20100003159 | Low-density high-toughness alloy and the fabrication method thereof - The present invention discloses a low-density high-toughness alloy and the fabrication method thereof. The alloy of the present invention consists essentially of: by weight percent, equal to or greater than 23% but lower than or equal to 33% manganese, equal to or greater than 8.1% but lower than or equal to 9.8% aluminum, equal to or greater than 3% but lower than or equal to 5.0% chromium, equal to or greater than 0.6% but lower than or equal to 1.2% carbon, equal to or greater than 0.1% but lower than or equal to 0.24% silicon and the balance of iron. The golf-club head made from the abovementioned alloy can obtain superior elongation, strength, damping capacity, and corrosion resistance even without any heat treatment, or any hot/cold working, such as forging and rolling; therefore, the fabrication cost thereof can be obviously reduced. | 01-07-2010 |
20110305591 | LOW DENSITY AND HIGH DUCTILITY ALLOY FOR A GOLF CLUB HEAD - A low density high ductility alloy for making a golf club head is composed of 31 to 36 w. t. % of Manganese (Mn), 6 to 10 w. t. % of Aluminum (Al), 0.3 to 1 w. t. % of Carbon (C), 4 to 8 w. t. % of Chromium (Cr), 0.2 to 0.6 w. t. % of Silicon (Si), and other component is iron (Fe). The density of the alloy is 6.8˜7 g/cm | 12-15-2011 |
20120045358 | HIGH MANGANESE NITROGEN-CONTAINING STEEL SHEET HAVING HIGH STRENGTH AND HIGH DUCTILITY, AND METHOD FOR MANUFACTURING THE SAME - 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. | 02-23-2012 |
20120288396 | AUSTENITE STEEL MATERIAL HAVING SUPERIOR DUCTILITY - Provided is an austenite steel having excellent ductility including 8 wt % to 15 wt % of manganese (Mn), 3 wt % or less (excluding 0 wt %) of copper (Cu), a content of carbon (C) satisfying relationships of 33.5C+Mn≧25 and 33.5C−Mn≦23, and iron (Fe) as well as unavoidable impurities as a remainder. According to an aspect, austenite is stabilized and generation of carbides in a network form at austenite grain boundaries is inhibited by adding copper (Cu) favorable to inhibition of carbide formation with respect to manganese and appropriately controlling contents of carbon and manganese, and thus, high economic efficiency may also be achieved while ductility and wear resistance are improved. | 11-15-2012 |
20140105780 | NON-MAGNETIC METAL ALLOY COMPOSITIONS AND APPLICATIONS - Disclosed are non-magnetic metal alloy compositions and applications that relate to non-magnetic metal alloys with excellent wear properties for use in dynamic three-body tribological wear environments where an absence of magnetic interference is required. In one aspect, the disclosure can relate to a drilling component for use in directional drilling applications capable of withstanding service abrasion. In a second aspect, a hardbanding for protecting a drilling component for use in directional drilling can be provided. In a third aspect, a method for prolonging service life of a drilling component for use in directional drilling can be provided. | 04-17-2014 |
420075000 | Titanium containing | 2 |
20090074605 | HIGH MANGANESE HIGH STRENGTH STEEL SHEETS WITH EXCELLENT CRASHWORTHINESS AND METHOD FOR MANUFACTURING OF IT - There are provided a high-workability high strength steel sheet with excellent workability due to the high elongation and excellent crashworthiness due to the high yield strength, and a method for manufacturing of it. The high manganese steel sheet includes, by weight: carbon (C): 0.2 to 1.5%, manganese (Mn): 10 to 25%, aluminum (Al): 0.01 to 3.0%, phosphorus (P) 0.03% or less, sulfur (S): 0.03% or less, nitrogen (N): 0.040% or less, at least one selected from the group consisting of silicon (Si): 0.02 to 2.5%, titanium (Ti): 0.01 to 0.10% and niobium (Nb): 0.01 to 0.10%, and the balance of Fe and other inevitable impurities. The high manganese steel sheet may be a hot-rolled steel sheet, a cold-rolled steel sheet, or a plated steel sheet, and is suitable for elaborate internal sheets as well as structural members of a car body since it has press workability due to the high elongation and high strain hardening index. Also, the high manganese steel sheet may be used for parts such as a front side member of an automobile since, among its characteristics, the steel sheet has an excellent impact absorbing ability. | 03-19-2009 |
20150147221 | Low-Density Hot-or Cold-Rolled Steel, Method for Implementing Same and Use Thereof - A rolled steel sheet is provided. The rolled steel sheet has a mechanical strength greater than or equal to 600 MPa and an elongation at fracture that is greater than or equal to 20%. A a method for its fabrication is also provided. The chemical composition of the steel sheet includes 0.10≦C≦0.30%, 6.0≦Mn≦15.0%, 6.0≦Al≦15.0%, and optionally one or more elements selected from among: Si≦2.0%, Ti≦0.2%, V≦0.6% and Nb≦0.3%. The remainder of the composition includes iron and the unavoidable impurities resulting from processing. The ratio of the weight of manganese to the weight of aluminum is such that | 05-28-2015 |