Class 420/478 - Aluminum containing

Subclass of Class 420 - Alloys or metallic compositions
Definition: Alloy, or metallic composition which additionally contains aluminum.
No. of patents: 37
Last issue date: 04/08/2008

Number	Title	Issue Date
7354489	Lead-free copper alloy and a method of manufacture A lead-free copper alloy based on Cu—Zn—Si and a method of manufacture thereof. The copper alloy is built on the basis of copper, zinc and silicon without toxic additives and consists of: 70 to 83% Cu, 1 to 5% Si and the further matrix-active elements: 0.01 to 2...	04/08/2008
7056396	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 per...	06/06/2006
6977017	Cu-ZN-A1(6%) shape memory alloy with low martensitic temperature and a process for its manufacture The present invention provides for Cu—Zn—Al(6%) alloy and an improved process to lower the martensitic transformation temperature, by a low temperature re-betatising treatment from 110° C. to 30° C. i.e. a lowering of 80° C. wherein previously high temperatur...	12/20/2005
6936089	Molten aluminum alloy processing method and flux for molten aluminum alloy processing A molten aluminum alloy processing method is intended use sludge produced by the zinc phosphate treatment of structures including those of aluminum alloys effectively as a flux for molten aluminum alloy processing. The flux contains 3 to 30% by mass fluorine-equival...	08/30/2005
6933054	Bearing material for the manufacture of wear-resistant slide bearings made of a copper-aluminum-alloy with defined cover layers A bearing material for the manufacture of wear-resistant slide bearings made of a Cu—Al-alloy, consisting of 0.01 to 20% Al, optionally further elements, the remainder copper and the common impurities. The slide bearing has for this purpose an outer, wear-reducing...	08/23/2005
6632300	Copper alloy having improved stress relaxation resistance A copper alloy having improved stress relaxation resistance is formed from a copper base alloy that consists, by weight, essentially of 1.8%-3.0% iron, 0.01%-1.0% zinc, 0.001 %-0.25% phosphorus, 0.1 %-0.35% magnesium and the balance is copper and unavoida...	10/14/2003
6391163	Method of enhancing hardness of sputter deposited copper films The present invention provides a method and apparatus for forming a copper layer on a substrate, preferably using a sputtering process. The sputtering process involves bombarding a conductive member of enhanced hardness with ions to dislodge the copper fr...	05/21/2002
5997663	Nickel-free copper alloy A nickel-free white or yellowish copper alloy having excellent corrosion resistance, with high degree of whiteness or yellowness, which is non-allergenic and therefore is suitable for use, for example, in elements, sliders, stoppers and the like for a sli...	12/07/1999
5945066	Zinc-copper based alloy and castings made therefrom A Zn--Cu based alloy is disclosed including from about 11 to about 50 wt. % of Cu, from about 0.1 to about 10 wt. % of Al, from about 0.01 to about 1.0 wt. % of Mg, and from about 0.001 to about 0.1 wt. % of at least one member of the group consisting of ...	08/31/1999
5919322	Alloy, in particular for use in the manufacture of frames for glass, jewelry, and the like A high-temperature, nickel-free alloy, in particular for spectacle frames, jewelry, etc. With the following composition in percentages by weight: Zn 3.0-7.0% Mn 8.0-13.0% Fe 0.5-3.5% Al 4.5-8.00 Cu the remainder....	07/06/1999
5908517	Alloy, in particular for use in the manufacture of frames for glass, jewelry, and the like A high-temperature, nickel-free alloy, in particular for spectacle frames, jewelry, etc. with the following composition in percentages by weight: ______________________________________ Zn 13.0-16.0% Mn 9.0-11.0% Fe 1.0...	06/01/1999
5879477	Reduced lead bismuth yellow brass Reduced lead bismuth yellow brasses are disclosed that are primarily useful for plumbing applications. Very low levels of grain refiners are used to increase dezincification resistance, to improve polishability, and for other desired characteristics. At l...	03/09/1999
5658401	Copper-zinc alloy A copper-zinc alloy for semi-finished products and articles which are highly loaded and subjected to extreme wear especially synchronizing rings. The alloy possesses a composition of 40 to 65% Cu, 8 to 25% Ni, 2.5 to 5% Si, 0 to 3% Al, 0 to 3% Fe, 0 to 2%...	08/19/1997
5630984	Brass alloy A brass alloy having a composition (wt %) as follows: Cu: 57-65%; Bi: 0.3-1.5%; Al: 0.4-0.8%; B: 5-15 ppm; impurities 0-1%, and Zn as remainder. A brass alloy whose Cu content is set to 57-65 wt % and whose further alloying constituents do not exceed 3 wt...	05/20/1997
5409552	Machinable copper alloys having reduced lead content Machinable alpha beta brass having a reduced lead concentration is claimed. The alloy contains bismuth to improve machinability. Either a portion of the zinc is replaced with aluminum, silicon or tin, or a portion of the copper is replaced with iron, nick...	04/25/1995
5360591	Reduced lead bismuth yellow brass Reduced lead bismuth yellow brasses are disclosed that are primarily useful for plumbing applications. Very low levels of grain refiners are used to increase dezincification resistance, to improve polishability, and for other desired characteristics. Silv...	11/01/1994
5288458	Machinable copper alloys having reduced lead content Machinable alpha beta brass having a reduced lead concentration is claimed. The alloy contains bismuth to improve machinability. Either a portion of the zinc is replaced with aluminum, silicon or tin, or a portion of the copper is replaced with iron, nick...	02/22/1994
5206480	Wire electrode for electro-discharge machining A wire electrode for electro-discharge machining made of a Cu alloy containing 38 to 50 percent by weight of Zn. The Cu alloy may also contain 0.01 to 1.0 percent by weight of Zr, 0.001 to 0.05 percent by weight in total of at least one element selected f...	04/27/1993
5069874	Method for reducing high-load, low-speed wear resistance in sliding members Disclosed herein is a wear-resistance alloy comprising 10 to 40 wt % of Zn, 3 to 10 wt % of Al, 0.1 to 4 wt % of Cr and the balance Cu....	12/03/1991
5000915	Wear-resistant copper alloy Disclosed herein is a wear-resistance alloy consisting essentially of about 10 to 40 wt % of Zn, about 3 to 10 wt % of Al, about 0.1 to 4 wt % of Cr, and optionally not more than about 8 wt % of Mn and not more than about 2 wt % of Ni, with the balance, C...	03/19/1991
4995924	Synchronizer ring in speed variator made of copper-base alloy A novel synchronizer ring for use in a speed variator that is made of a Cu base alloy and which exhibits good initial accommodation by mating surfaces while ensuring high wear resistance is disclosed. The ring is made of a Cu base alloy containing 20-40% ...	02/26/1991
4994235	Wear-resistance aluminum bronze alloy Disclosed herein is a wear-resistance aluminum bronze alloy comprising 4 to 15 wt % of Al, 0.1 to 10 wt % of Cr and the balance Cu, and optionally containing not more than 6 wt % of Ni and not more than 15 wt % of Mn....	02/19/1991
4965045	Copper-based alloy for obtaining aluminum-beta-brasses, containing grain size reducing additives of titanium and niobium A new copper-based metallic alloy is described containing principally Zn and Al in quantities such as to render it capable, after solution heat treatment at high temperature, and tempering, of assuming a crystalline structure of Beta type; its principal c...	10/23/1990
4874439	Synchronizer ring in speed variator made of wear-resistant copper alloy having high strength and toughness A synchronizer ring for use in an automotive speed variator. The ring not only has high strength and toughness but also exhibits high wear resistance, as well as good synchronizing characteristics with respect to a mating member as expressed in terms of f...	10/17/1989
4749548	Copper alloy lead material for use in semiconductor device Copper alloy lead materials used in the fabrication of semiconductor devices such as ICs and LSIs are required to have a tensile strength of 40 kgf/mm2 or more, an elongation of 4% or more, an electrical conductivity of 50% IACS or more, and a ...	06/07/1988
4659374	Mixed binder systems for agglomerates A novel mixed binder system for agglomerates is disclosed. The agglomerates are suitable for use in the production of metals and alloys in a carbothermic reduction process such as the production of silicon in a direct arc furnace by the carbothermic reduc...	04/21/1987
4642146	Alpha copper base alloy adapted to be formed as a semi-solid metal slurry A copper base alloy capable of forming a microstructure comprising a plurality of discrete particles in a surrounding metal matrix having a lower melting point than the particles. The alloy consists essentially of from about 3% to about 6% nickel, from ab...	02/10/1987
4472213	Copper-base shape-memory alloys A copper-base shape-memory alloy having high resistance to fatigue failure as well as high ductility and, in particular, high deformability in the martensite phase is disclosed. The alloy consists essentially of 10-45% Zn, 1-10% Al, 0.05-2% Ti, 0.05-2% of...	09/18/1984
4452757	Copper alloy for radiators Corrosion-resistant copper alloys for the manufacture of radiators are composed of, by weight, 25-40% zinc, 0.005-0.070% phosphorus, 0.05-1.0% each tin and aluminum, and the balance copper and inevitable impurities....	06/05/1984
4437911	Beta alloys with improved properties An aluminum bearing beta copper alloy that on heating to a first temperature shows a transition from an (alpha+beta)-region, an (alpha+beta+gamma)-region or a (beta+gamma)-region to a beta-region. Its average grain size is less than 200 μm and it contains alu...	03/20/1984
4407776	Shape memory alloys A shape memory alloy consisting essentially of, by weight ratio, 2 to 15% aluminium, 0.01 to 3% beryllium and the balance being substantially copper, with impurities being inevitably present in the process of preparation, and a shape memory alloy further ...	10/04/1983
4347081	Dental alloy A non-precious metal alloy for use in restorative dentistry comprising in percent weight: copper 60-66, silicon 0.60-1.65, aluminum 0.25-0.75, titanium 0.20-0.80, chromium 0.10-0.80, and zinc 33-36....	08/31/1982
4225051	Containers for storing fluids under pressure This invention relates to lightweight containers for fluids under pressure. The container is formed from an outer shell of fibrous material impregnated with resin and an inner wall made of an alloy which has a temperature Ms for reversible martensit...	09/30/1980
4148635	High temperature softening resistance of alloy 688 and modified 688 through the addition of Nb The improved high temperature softening resistance of Alloy 688 and modified 688 is obtained by the addition of niobium to the alloys. These particular alloy systems not only exhibit resistance to high temperature softening, but also exhibit improved stre...	04/10/1979
4148634	Machinability of alloy 688 and modified 688 through the addition of Pb The improved machinability of standard Alloy 688 and modified 688 is achieved through the addition of lead to the alloy. This machinability improvement in Alloy 688 is not achieved at the detriment of the well-known strength of Alloy 688....	04/10/1979
4144104	Stable heat shrinkable ternary ଲ-brass alloys containing aluminum Those alloys falling within the area on a ternary diagram defined by the points: Are particularly suited for use as the material of heat recoverable articles as they exhibit good ductility and stability and are easily worked by hot working techniques. Add...	03/13/1979
4038068	Method of melting copper alloys with a flux Improved method for melting copper base alloys containing from 2 to 12% aluminum including the steps of covering a molten mass of said copper base alloy with an essentially continuous flux layer of a molten salt consisting essentially of from 10 to 90% by...	07/26/1977

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Class 420/478 - Aluminum containing