Class / Patent application number | Description | Number of patent applications / Date published |
420471000 | Aluminum containing | 47 |
20080219881 | USE OF A COPPER ZINC ALLOY - A copper zinc alloy that is used as a material for a sliding bearing wherein the alloy comprises 59-73% copper, 2.7-8.5% manganese, 1.5-6.3% aluminum, 0.2-4% silicon, 0.2-3% iron, 0-2% lead, 0-2% nickel, 0-0.4% tin, residual zinc and unavoidable impurities. | 09-11-2008 |
20090016927 | BRASS ALLOY AS RAW MATERIALS FOR SEMI SOLID METAL CASTING - A brass alloy as raw materials for Semi Solid Metal casting has a component composition containing Zn of 8 to 40 mass %, Zr of 0.0005 to 0.04 mass %, P of 0.01 to 0.25 mass %, and a balance of Cu and inevitable impurities, further containing one or more kinds of Si of 2 to 5 mass %, Sn of 0.05 to 6 mass %, and Al of 0.05 to 3.5 mass % as needed, and further containing one or more kinds of Pb of 0.005 to 0.45 mass %, Bi of 0.005 to 0.45 mass %, Se of 0.03 to 0.45 mass %, and Te of 0.01 to 0.45 mass %. | 01-15-2009 |
20090022620 | Copper-zinc alloy, production method and use - The invention relates to a copper-zinc alloy, consisting of (in wt %):
| 01-22-2009 |
20090092517 | Copper Alloy Extruded Material and Its Manufacturing Method - A copper alloy extruded material is provided by extruding a copper alloy powder solidified billet and old grain boundaries remain in it. | 04-09-2009 |
20090214380 | LOW-MIGRATION COPPER ALLOY - The present invention relates to a copper alloy, in particular for components which carry media or drinking water, in particular fittings, valves or compression joints and also an advantageous use of the copper alloy and components for lines carrying media or drinking water. It is an object of the present invention to provide a copper alloy which has good corrosion resistance, good castability and mechanical workability and also good mechanical properties and displays good migration values, particularly in respect of the migration of lead and nickel ions into drinking water. The copper alloy provided for this purpose by the present invention comprises from 2% by weight to 4.5% by weight of silicon, from 1 to 15% by weight of zinc and from 0.05% by weight to 2% by weight of manganese. Furthermore, from 0.05 to 0.4% by weight of aluminium and from 0.05 to 2% by weight of tin can optionally be present. As balance, the copper alloy contains copper and unavoidable impurities. | 08-27-2009 |
20090263272 | Lead-free free-machining brass having improved castability - There is provided a brass free from lead (Pb) and possessing excellent machinability, castability, mechanical properties and other properties. A brass consisting of not less than 55% by weight and not more than 75% by weight of copper (Cu), not less than 0.3% by weight and not more than 4.0% by weight of bismuth (Bi), and y % by weight of boron (B) and x % by weight of silicon (Si), y and x satisfying the following requirements: 0≦x≦2.0, 0≦y≦0.3, and y>−0.15x+0.015ab, wherein a is 0.2 when Bi is 0.3% by weight ≦Bi<0.75% by weight; 0.85 when Bi is 0.75% by weight ≦Bi<1.5% by weight; and 1 when Bi is 1.5% by weight ≦Bi≦4.0% by weight, b is 1 when the apparent content of zinc (Zn) is not less than 37% and less than 41%; and 0.75 when the apparent content of Zn is not less than 41% and not more than 45%, the balance consisting of Zn and unavoidable impurities, is excellent in castability, as well as, for example, in machinability and mechanical properties. | 10-22-2009 |
20090311126 | LEAD-FREE FREE-CUTTING PHOSPHOROUS BRASS ALLOY AND ITS MANUFACTURING METHOD - Considering the solid solubility of P in the matrix of copper will be decreased rapidly with the temperature decrease and form the brittle intermetallic compounds Cu | 12-17-2009 |
20090311127 | LEAD-FREE FREE-CUTTING MAGNESIUM BRASS ALLOY AND ITS MANUFACTURING METHOD - A lead-free free-cutting magnesium brass alloy comprises 56.0 to 64.0 wt % Cu, 0.6 to 2.5 wt % Mg, 0.15 to 0.4 wt % P and other elements 0.002 to 0.9 wt % which comprise at least two elements selected from the group consisting of Al, Si, Sb, Sn, Re, Ti and B and the balance being Zn and unavoidable impurities. The process for producing such alloy is also proposed. The invented alloy is excellent in cuttability, castability, hot and cold workability, corrosion resistance, mechanical properties and weldability and particularly applicable in spare parts, forging and castings which need cutting, grinding and electroplating process. The cost of necessary metal materials of the invented alloy is lower than lead-free free-cutting bismuth and antimony brass alloy and is equivalent to lead-contained brass alloy. | 12-17-2009 |
20090311128 | COPPER ALLOY SHEETS FOR ELECTRICAL/ELECTRONIC PART - A shear plane ratio is reduced by a dislocation density in which a value obtained by dividing the half-value width β of the intensity of diffraction of {311} plane in the surface of a Cu—Fe—P alloy sheet, by its peak height H, is 0.015 or more. | 12-17-2009 |
20100008817 | COPPER ALLOY FOR SEAMLESS PIPES - A seamless pipe copper alloy includes Zr and at least one of Al, Sn, and Zn, with the balance being Cu and unavoidable impurities, the Al content, the Sn content, the Zn content, and the Zr content of the copper alloy satisfying the expressions 0.05≦A+B+C, 0.01≦D≦0.5, and 0.25≦A+B+C+D≦0.8 (wherein A represents the Al content (mass %), B represents the Sn content (mass %), C represents the Zn content (mass %), and D represents the Zr content (mass %)). The seamless pipe copper alloy exhibits excellent workability, high strength, and high thermal conductivity. The seamless pipe copper alloy also shows only a small decrease in strength due to brazing. | 01-14-2010 |
20100080731 | Tin-Free Lead-Free Free-Cutting Magnesium Brass Alloy and Its Manufacturing Method - A tin-free lead-free free-cutting magnesium brass alloy comprises 56.0 to 64.0 wt % Cu, 1.05 to about 2.1 wt % Mg, 0.21 to 0.4 wt % P and other elements 0.002 to 0.9 wt % which comprise at least two elements selected from the group consisting of Al, Si, Sb, rare earth elements, Ti and B and the balance being Zn with unavoidable impurities, wherein a cutting percentage of the alloy is at least 80%. The process for producing such alloy is also proposed. The invented alloy is excellent in cuttability, castability, hot and cold workability, corrosion resistance, mechanical properties and weldability and particularly applicable in spare parts, forging and casting which need cutting and grinding process. The cost of necessary metal materials of the invented alloy is lower than lead-free free-cutting bismuth and antimony brass alloy and is equivalent to lead-contained brass alloy. | 04-01-2010 |
20100098579 | Lead-Free, Bismuth-Free Free-Cutting Phosphorous Brass Alloy And Its Manufacturing Method - The present invention relates to a lead-free, bismuth-free free-cutting phosphorous brass alloy and its method of manufacture. The alloy comprises: Cu; Zn; 0.59 to 1.6 wt % P; and other elements in the amount of 0.005 to 0.6 wt %, which comprise at least two elements selected from the group consisting of Al, Si, Sb, Sn, Rare earth element (RE), Ti and B, and the balance being unavoidable impurities. The phosphorous brass alloy contains a combined wt % of Cu and Zn of between 97.0 wt % and 99.5 wt %, within which the content of Zn is above 40 wt %. Considering the solid solubility of P in the matrix of copper will be decreased rapidly with the temperature decrease and form the brittle intermetallic compounds Cu | 04-22-2010 |
20100135848 | Lead-free free-cutting silicon brass alloy - The present invention supplies a lead-free free-cutting silicon brass alloy with high zinc which preferably comprises 35.0 to 42.0 wt % Zn, 0.1 to 1.5 wt % Si, 0.03 to 0.3 wt % Al, 0.01 to 0.36 wt % P, 0.01 to 0.1 wt % Ti, 0.001 to 0.05 wt % rare earth metals selected from the group consisting of La and Ce, 0.05 to 0.5 wt % Sn, and/or 0.05 to 0.2 wt % Ni, and the balance being Cu and unavoidable impurities. The invented alloy is excellent in castability, weldability, cuttability, electroplating properties, corrosion resistance, mechanical properties. The alloy is especially applicable in castings which need cutting and welding under low pressure die casting, such as castings for faucet bodies in the water supply system. The alloy is also suitable for use in components which are produced from casting ingots by die forging. | 06-03-2010 |
20100158748 | Lead-Free Free-Cutting Aluminum Brass Alloy And Its Manufacturing Method - The present invention provides a lead-free free-cutting aluminum brass alloy and its manufacturing method. The alloy comprises: 57.0˜63.0 wt % Cu, 0.3˜0.7 wt % Al, 0.1˜0.5 wt % Bi, 0.2˜0.4 wt % Sn, 0.1˜0.5 wt % Si, 0.01˜0.15 wt % P, at least two elements selected from the group of 0.01-0.15 wt % Mg, 0.0016-0.0020 wt % B, and 0.001-0.05 wt % rare earth elements and the balance being Zn and unavoidable impurities. The inventive alloy has excellent castability, weldability, cuttability and corrosion resistance. It is suitable for low pressure die casting, gravity casting, horizontal continuous casting, forging and extrusion. Its metal material cost is lower than bismuth brass. It is particularly applicable for components used in drinking water supply systems and other structural components. It is a new environmentally-friendly free-cutting aluminum brass alloy. | 06-24-2010 |
20100284851 | COPPER ALLOY SHEET EXCELLENT IN RESISTANCE PROPERTY OF STRESS RELAXATION - The invention provides a Cu—Ni—Sn—P alloy sheet satisfying the resistance property of stress relaxation in the direction perpendicular to the rolling direction and excellent in the other necessary properties as terminals and connectors. The invention relates to a Cu—Ni—Sn—P alloy sheet having a specific composition, which is made to contain specific atomic clusters containing at least any of an Ni atom or a P atom, as detected with a three-dimensional atom probe field ion microscope, in a specific density, by increasing the reduction ratio in the final cold rolling and by intentionally shortening the time for the rolling and the time to be taken before the final annealing at low temperature, and of which the necessary properties as a terminal or connector | 11-11-2010 |
20110038752 | WHITE COPPER-BASE ALLOY - A white bronze alloy consisting essentially of, in weight percent, about 0.3-1.5 wt % aluminum, about 0.5-2.0 wt % bismuth, about 61-66 wt % copper, about 0.0-0.5 wt % iron, about 11-15 wt % manganese, about 4.0-6.0 wt % nickel, about 0.5-2.0 wt % tin, and about 16-20 wt % zinc, as well as incidental amounts of impurities. The alloy is expected to have antimicrobial properties which make the alloy desirable for fabrication into food handling equipment and products for hospitals, bathrooms, and kitchens. | 02-17-2011 |
20110064602 | DEZINCIFICATION-RESISTANT COPPER ALLOY - A dezincification-resistant copper alloy is provided. The copper alloy comprises less than 0.3 wt % of lead (Pb), 0.02 to 0.15 wt % of antimony (Sb), 0.02 to 0.25 wt % of arsenic (As), 0.4 to 0.8 wt % of aluminum (Al), 1 to 20 ppm of boron (B), and more than 97 wt % of copper (Cu) and zinc (Zn), wherein the copper is in an amount ranging from 58 to 70 wt %. The dezincification-resistant copper alloy of the present invention has excellent casting properties, good toughness and machinability, and can be corrosion-resistant, thereby reducing dezincification on the surfaces of the alloy. | 03-17-2011 |
20110081271 | LOW-LEAD COPPER ALLOY - The present invention provides a low-lead copper alloy, which includes 0.05 to 0.3 wt % of lead, 0.3 to 0.8 wt % of aluminum, 0.01 to 3 wt % of bismuth, 1 to 4 wt % of silicon, 0.1 to 1 wt % of tin, and more than 93.6% of copper and zinc, wherein copper is in an amount ranging from 61 to 78 wt %. The low-lead copper alloy of the present invention has excellent toughness and processability, and can provide increased resistance in an environment with a high concentration of chlorine ions. | 04-07-2011 |
20110104000 | Lead-Free, Bismuth-Free Free-Cutting Silicon Brass Alloy - The present invention supplies a lead-free, bismuth-free free-cutting silicon brass alloy with high zinc which preferably comprises 35.0 to 42.0 wt % Zn, 0.1 to 1.5 wt % Si, 0.03 to 0.3 wt % Al, 0.01 to 0.36 wt % P, 0.01 to 0.1 wt % Ti, 0.001 to 0.05 wt % rare earth metals selected from the group consisting of La and Ce, 0.05 to 0.5 wt % Sn, and/or 0.05 to 0.2 wt % Ni, and the balance being Cu and unavoidable impurities. In yet another embodiment, the alloy may be boron-free. The invented alloy is excellent in castability, weldability, cuttability, electroplating properties, corrosion resistance, mechanical properties. The alloy is especially applicable in castings which need cutting and welding under low pressure die casting, such as castings for faucet bodies in the water supply system. The alloy is also suitable for use in components which are produced from casting ingots by die forging. | 05-05-2011 |
20110129383 | Copper-zinc alloy - A copper-zinc alloy includes 56-65% by weight copper (Cu), 0.2-2.0%, by weight, of Tin (Sn) for improving tensile strength of Copper (Cu) and for strengthening the corrosion resistance of Zinc (Zn), 0.1-1.0%, by weight, of Aluminum (Al) for improving the yielding and tensile strength and corrosion resistance of the alloy, 0.01-0.6%, by weight, of Nickel (Ni) for strengthening the yielding and the tensile strength and the resistance and the heat conductivity of the alloy, lower than 0.5%, by weight, of Ferrite (Fe), with the balance being Zinc (Zn) and inevitable impurities. | 06-02-2011 |
20110129384 | Copper-zinc alloy - A copper-zinc alloy includes 56-65%, by weight, of copper (Cu), 0.2-1.5%, by weight, of Tin (Sn) for improving tensile strength of copper (Cu) and for strengthening the corrosion resistance of Zinc (Zn), 0.1-1.0%, by weight, of Aluminum (Al) for ameliorating the yielding and tensile strength and corrosion resistance of the alloy, 0.01-0.6%, by weight, of Nickel (Ni) for improving the yielding and the tensile strength and the resistance and the heat conductivity of the alloy, lower than 0.5%, by weight, of Ferrite (Fe), 0.05-2.0%, by weight, of Antimony (Sb) for strengthen cutting ability and improving corrosion resistance, with the balance being zinc (Zn) and inevitable impurities. | 06-02-2011 |
20110129385 | Copper-zinc alloy - A copper-zinc alloy includes 56-65%, by weight, of Copper (Cu), 0.2-2.0%, by weight, of Tin (Sn) for improving tensile strength of Copper (Cu) and for strengthening the corrosion resistance of Zinc (Zn), 0.1-1.0%, by weight, of Aluminum (Al) for ameliorating the yielding and tensile strength and corrosion resistance of the alloy, 0.01-0.6%, by weight, of Nickel (Ni) for improving the yielding and the tensile strength and the resistance and the heat conductivity of the alloy, lower than 0.5%, by weight, of Ferrite (Fe), with the balance being Zinc (Zn) and inevitable impurities, the alloy also includes a secondary material, which is Phosphorus (p), Arsenic (As) or both for strengthening the corrosion resistance of the alloy. | 06-02-2011 |
20110142715 | Brass alloy - The present invention provides an environmental friendly brass alloy, including 0.4 to 0.8 wt % of aluminum; 0.6 to 1.6 wt % of nickel; 0.8 to 2.0 wt % of tin; more than 95.6 wt % of copper and zinc; and less than 0.1 wt % of iron, lead, phosphorous and impurities, wherein the copper is present in an amount ranging from 60 to 68 wt %. | 06-16-2011 |
20110223056 | COPPER ALLOY SHEET - The present invention relates to a Cu—Ni—Sn—P-based copper alloy sheet having a specific composition, where (1) the copper alloy sheet is set to have an electrical conductivity of 32% IACS or more, a stress relaxation ratio in the direction parallel to the rolling direction of 15% or less, a 0.2%-proof stress of 500 MPa or more and an elongation of 10% or more; (2) the X-ray diffraction intensity ratio I(200)/I(220) in the sheet surface is set to be a given value or less and at the same time, anisotropy in the stress relaxation resistance characteristic is reduced by fining the grain size; (3) the texture of the copper alloy sheet is set to a texture such that the distribution density of B orientation and the sum of distribution densities of B orientation, S orientation and Cu orientation each is set to fall in a specific range and bendability is thereby enhanced; or (4) the dislocation density measured using the value obtained by dividing the half-value breadth of the X-ray diffraction intensity peak from {200} plane in the copper alloy sheet surface by the peak height is set to a given value or more and press punchability is thereby enhanced. The Cu—Ni—Sn—P-based copper alloy sheet of the present invention is excellent in the properties required for a terminal or connector and further (1) has excellent strength-ductility balance, (2) satisfies the stress relaxation resistance characteristic in the direction orthogonal to the rolling direction, (3) has excellent bendability, or (4) has excellent press punchability. | 09-15-2011 |
20110229367 | COPPER NICKEL ALUMINUM ALLOY - An alloy including at least 6 weight percent aluminum, greater than 6 weight percent nickel, and at least 50 weight percent copper. In some embodiments, the alloy includes 6 to 9 weight percent aluminum, 6 to 11 weight percent nickel, 1.5 to 3 weight percent iron, 1.5 to 3 weight percent manganese, 1 to 3 weight percent silicon, 1 to 5 weight percent tin, and 75 to 80 weight percent copper. The alloy is particularly suitable for jewelry, e.g., wrist watches, and materials exposed to aquatic environments for extended periods of time, e.g., boat hulls and boat propellers. | 09-22-2011 |
20120027638 | HIGH-STRENGTH COPPER ALLOY - A high-strength copper alloy contains 20 to 45% of zinc, 0.3 to 1.5% of iron, 0.3 to 1.5% of chromium, and a balance of copper, based on mass. | 02-02-2012 |
20120121455 | Low lead ingot - A composition for a low lead ingot comprising primarily copper and including tin, zinc, sulfur, phosphorus, nickel. The composition may contain manganese. The low lead ingot, when solidified, includes sulfur or sulfur containing compounds such as sulfides distributed through the ingot. The presence and a substantially uniform distribution of these sulfur compounds imparts improved machinability and better mechanical properties. | 05-17-2012 |
20120251382 | LEAD-FREE FREE-CUTTING CORROSION-RESISTANT SILICON-BISMUTH BRASS ALLOY - A lead-free free-cutting corrosion-resistant silicon-bismuth brass alloy, including the following: between 60.0 and 65.0 wt % of Cu, between 0.6 and 1.8 wt % of Si, between 0.2 and 1.5 wt % of Bi, between 0.02 and 0.5 wt % of Al, less than 1.5 wt % of Ni+Mn+Sn, between 0.01 and 0.5 wt % of La—Ce alloy, between 0.002 and 0.02 wt % of B, with the remainder being Zn and inevitable impurities, wherein the total amount of impurities are no more than 0.5 wt %. | 10-04-2012 |
20120294754 | COPPER ALLOY WITH HIGH STRENGTH AND HIGH ELECTRICAL CONDUCTIVITY - This copper alloy with high strength and high electrical conductivity includes: Mg: more than 1.0% by mass to less than 4% by mass; and Sn: more than 0.1% by mass to less than 5% by mass, with a remainder including Cu and inevitable impurities, wherein a mass ratio Mg/Sn of a content of Mg to a content of Sn is in a range of 0.4 or more. This copper alloy with high strength and high electrical conductivity may further include Ni: more than 0.1% by mass to less than 7% by mass. | 11-22-2012 |
20120308429 | COPPER ALLOY SHEET FOR ELECTRIC AND ELECTRONIC PART - A shear plane ratio is reduced by a dislocation density in which a value obtained by dividing the half-value width β of the intensity of diffraction of {311} plane in the surface of a Cu—Fe—P alloy sheet, by its peak height H, is 0.015 or more. In addition, a Cu—Fe—P alloy sheet with relatively small Fe content is provided with a texture in which a ratio (I(200)/I(220)) of intensity of diffraction of (I(200)) from the (200) plane in the sheet surface to intensity of diffraction of (I(220)) from the (220) plane, is 0.3 or less. In addition, a Cu—Fe—P alloy sheet with relatively small Fe content is provided with a texture in which the orientation distribution density of Brass orientation measured by the crystal orientation analysis method using an EBSP by an FE-SEM, is 25% or more; and an average grain size in the sheet is 6.0 μm or less. | 12-06-2012 |
20130028784 | COPPER ALLOY WROUGHT MATERIAL, COPPER ALLOY PART, AND METHOD OF PRODUCING A COPPER ALLOY WROUGHT MATERIAL - A copper alloy wrought material, containing 1.5 to 7.0 mass % of Ni, 0.3 to 2.3 mass % of Si, 0.02 to 1.0 mass % of S, and optionally at least one selected from the group consisting of Sn, Mn, Co, Zr, Ti, Fe, Cr, Al, P, and Zn in a total amount of 0.05 to 2.0 mass %, with the balance being Cu and unavoidable impurities, wherein sulfide particles, which contribute to machinability, are dispersed therein, in which an average diameter of the sulfide particles is 0.1 to 10 μm, and in which an area ratio of the sulfide particles is 0.1 to 10%, and wherein the copper alloy wrought material has a tensile strength of 500 MPa or greater and an electrical conductivity of 25% IACS or higher. | 01-31-2013 |
20130078137 | USE OF A COPPER ZINC ALLOY - A copper zinc alloy that is used as a material for a sliding bearing wherein the alloy comprises 59-73% copper, 2.7-8.5% manganese, 1.5-6.3% aluminum, 0.2-4% silicon, 0.2-3% iron, 0-2% lead, 0-2% nickel, 0-0.4% tin, residual zinc and unavoidable impurities. | 03-28-2013 |
20130142691 | METHOD FOR PREVENTING ELUTION OF Bi FROM COPPER ALLOY - Provided is a method for preventing the elution of Bi from copper alloy, in which the elution of Bi is prevented in leadless copper-alloy plumbing equipment and the like containing a trace of lead and a predetermined amount of Bi. The present invention relates to a method for preventing the elution of Bi from copper alloy in which at least Bi present on the surface of copper alloy containing Bi is selectively removed by preferentially dissolving Bi in a 4 to 20 mass % concentration of nitric acid while suppressing Cu dissolution. Furthermore, elution of Pb is suppressed using a 10-20 mass % concentration of nitric acid. In this case, by removing at least Bi present on the surface of copper alloy containing Bi using nitric acid and then treating the surface of the copper alloy by shot-blasting corrosive products, such as oxides, produced from the nitric acid are removed, and gloss is imparted to the surface. | 06-06-2013 |
20140010704 | COPPER ALLOY WIRE AND COPPER ALLOY SPRING - To provide a copper alloy wire being a filamentary material of a copper alloy containing, in percent by mass, Ni: 3.0 to 15.0%, Al: 0.5 to 5.0%, and Si: 0.1 to 3.0%, with the remainder being composed of Cu and incidental impurities, which is provided with the tensile strength (σB) of 900 to 1300 MPa and electrical conductivity of 10 to 22% IACS and, in addition to that property, satisfies an intensity ratio of A:B:C of 1.0:1.2 to 6.0:2.2 to 8.0 when A, B and C represent diffraction intensities of Cu (111), Cu (200) and Cu (220), respectively, according to an X-ray diffraction method in a predetermined cross section, and which is used for an operation or contact spring by incorporating in mobile phones and various small electronic instruments by formulating into a copper alloy spring used, particularly, for an electrical conductive spring which copes with heat sagging, does not contain a harmful element such as Be, is excellent in electrical conductivity and spring property, particularly, heat sagging property accompanied with heat generation at energization, and is of the high strength and high electrical conductivity, and a copper alloy spring resulting from the copper alloy wire. | 01-09-2014 |
20140234156 | BRASS WITH EXCELLENT CORROSION RESISTANCE - Disclosed is a brass that possesses high corrosion resistance even without undergoing a heat treatment step contemplated for dezincification corrosion suppression. This brass includes 55% by mass to 75% by mass of Cu (copper), 0.01% by mass to 1.5% by mass of Si (silicon), Sn (tin) and Al (aluminum) in such amounts as to satisfy a prescribed relationship with an apparent Zn content, less than 0.25% by mass of Mn (manganese) as an optional ingredient, less than 0.05% by mass of Ti (titanium) as an optional ingredient, less than 0.3% by mass of Mg (magnesium) as an optional ingredient, less than 0.15% by mass of P (phosphorus) as an optional ingredient, and less than 0.004% by mass of a rare earth metal as an optional ingredient with the balance consisting of Zn (zinc) and unavoidable impurities, the apparent zinc content being 37 to 45. | 08-21-2014 |
20150044089 | COPPER/ZINC ALLOYS HAVING LOW LEVELS OF LEAD AND GOOD MACHINABILITY - The free-cutting copper alloy according to the present invention contains a greatly reduced amount of lead in comparison with conventional free-cutting copper alloys, but provides industrially satisfactory machinability. The free-cutting alloys comprise 69 to 79 percent, by weight, of copper, 2.0 to 4.0 percent, by weight, of silicon, 0.02 to 0.4 percent, by weight, of lead, and the remaining percent, by weight, of zinc. | 02-12-2015 |
20150071813 | BRASS ALLOY FOR TAP WATER SUPPLY MEMBER - A brass alloy is provided having good mechanical properties and castability, and excellent general-purpose properties, while its dezincification corrosion is inhibited. The brass alloy contains 0.4% by mass or more and 3.2% by mass or less of Al; 0.001% by mass or more and 0.3% by mass or less of P; 0.1% by mass or more and 4.5% by mass or less of Bi; 0% by mass or more and 5.5% by mass or less of Ni; 0% by mass or more and 0.5% by mass or less of Mn, Fe, Pb, Sn, Si, Mg, and Cd, respectively; and Zn; the balance being Cu and a trace element or elements. The zinc equivalent (Zneq) calculated from the content of Zn and other elements, and the content of Al (% by mass) satisfy the following Equations (1) and (2): | 03-12-2015 |
20150104347 | Low Shrinkage Corrosion-Resistant Brass Alloy - A low shrinkage corrosion-resistant brass alloy contains 58 to 64 wt % of copper; 0.1 to 0.3 wt % of tin; less than 0.25 wt % of lead; 0.01 to 0.15 wt % of phosphorus; and more than 97.5 wt % of copper and zinc; zinc and unavoidable impurities; and more than 98 wt % of copper and zinc. It is to be noted that at least two of nickel, niobium, zirconium and aluminum is in an amount ranging from 0.01 to 0.4 wt %. | 04-16-2015 |
20150354028 | LOW-LEAD BRASS ALLOY - The invention relates to a low-lead brass alloy, comprising: by the total weight of the brass alloy, 59-61 wt % copper, 0-0.1 wt % lead, 0.5-1.3% wt % bismuth, 0-0.1 wt % iron, 0-0.05 wt % aluminum, 0-0.2 wt % tin, 0-0.3 wt % nickel, and a balance of zinc. | 12-10-2015 |
20150368758 | LOW-LEAD BRASS ALLOY - The invention relates to a low-lead brass alloy, comprising: by the total weight of the brass alloy, 62.5-63 wt % copper, 0.16-0.24 wt % lead, 0-0.02 wt % antimony, 0-0.01 wt % magnesium, 0-0.2 wt % tin, 0.0005-0.0009 wt % boron, 0.55-0.7 wt % aluminum, 0.05-0.15 wt % iron, 0-0.15 wt % nickel, 0.09-0.12 wt % arsenic, 0-0.005 wt % zirconium, 0-0.01 wt % impurities, and a balance of zinc. | 12-24-2015 |
20150368759 | COPPER-BASE ALLOY - A copper-base alloy includes 63.5 to 69.0 mass % of Cu, 1.2 to 2.0 mass % of Sn, 0.15 mass % or less of Fe, 0.1 to 2.0 mass % of Pb, 0.01 to 0.2 mass % of Al, 0.06 to 0.15 mass % of Sb, and 0.04 to 0.15 mass % of P when the copper-base alloy includes 63.5 mass % or more and less than 65.0 mass % of Cu, or 0.15 mass % or less of P when the copper-base alloy includes 65.0 to 69.0 mass % of Cu, with the balance being Zn and unavoidable impurities. | 12-24-2015 |
20160053348 | Low shrinkage corrosion-resistant brass alloy - A low shrinkage corrosion-resistant brass alloy contains: 58 to 64 wt % of copper; 0.3 to 1.0 wt % of tin; less than 0.25 wt % of lead; 0.01 to 0.15 wt % of phosphorus; at least two of nickel, niobium, zirconium and aluminum being an amount ranging from 0.01 to 0.4 wt %; zinc and unavoidable impurities. Copper and zinc is in an amount ranging more than 98 wt %. | 02-25-2016 |
20160068931 | LEAD-FREE EASY-TO-CUT CORROSION-RESISTANT BRASS ALLOY WITH GOOD THERMOFORMING PERFORMANCE - The present invention provides a lead-free easy-to-cut corrosion-resistant brass alloy with good thermoforming performance. The brass alloy contains: 74.5-76.5 wt % of Cu, 3.0-3.5 wt % of Si, 0.11-0.2 wt % of Fe, 0.04-0.10% wt % of P, Zn and inevitable impurities. The alloy provided by the present invention has good cold-working and hot-working forming performance, and good dezincification corrosion-resistant and stress corrosion-resistant performance, applies to parts that require cutting and grinding forming in water-heating sanitaryware, electronic appliances, automobiles and the like, and especially applies to production and assembling of complex forging products for which stress is inconvenient to eliminate, such as water taps, values and the like. | 03-10-2016 |
20160102385 | LOW LEAD ALLOY - A composition for a low lead ingot comprising primarily copper and including tin, zinc, sulfur, phosphorus, nickel. The composition may contain carbon. The low lead ingot, when solidified, includes sulfur or sulfur containing compounds such as sulfides distributed through the ingot. The presence and a substantially uniform distribution of these sulfur compounds imparts improved machinability and better mechanical properties. | 04-14-2016 |
20160186296 | COPPER ALLOY PLATE HAVING EXCELLENT ELECTRICAL CONDUCTIVITY AND BENDING DEFLECTION COEFFICIENT - There are provided a copper alloy plate having high strength, high electrical conductivity, a high bending deflection coefficient, and excellent stress relaxation characteristics, and an electronic component preferred for high current applications or heat dissipation applications. A copper alloy plate comprising 0.8 to 5.0% by mass of one or more of Ni and Co and 0.2 to 1.5% by mass of Si, with the balance being copper and an unavoidable impurity, having a tensile strength of 500 MPa or more, and having an A value of 0.5 or more, the A value being given by the following formula: | 06-30-2016 |
20160201164 | COPPER ALLOY | 07-14-2016 |
20160376688 | Cu-AI-Mn-BASED ALLOY MATERIAL, METHOD OF PRODUCING THE SAME, AND ROD MATERIAL OR SHEET MATERIAL USING THE SAME - A Cu—Al—Mn-based alloy material ( | 12-29-2016 |