Abstract: Bismuth bearing copper-nickel-manganese-zinc corrosion and gall resistant castable alloy, particularly for use in food processing machinery, with the following weight percentage range:Nickel=12-28Manganese=12-28Zinc=12-28Aluminum=0.5-2.00Bismuth=2-6Phosphorus=0-0.3Tin =0-1.5Iron=0-1.

Abstract: 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 slide fastener. The alloy consists of a composition represented by the general formula I: Cu.sub.w Zn.sub.x Mn.sub.y (Al and/or Sn).sub.z wherein w, x, y and z denote weight percentages that are within the ranges of 70.ltoreq.w.ltoreq.85, 5.ltoreq.x.ltoreq.22, 7<y.ltoreq.15, and 0<z.ltoreq.4, or by the general formula II: Cu.sub.w Zn.sub.x Mn.sub.y (Al and/or Sn).sub.z wherein w, x, y and z denote weight percentages that are within the ranges of 70.ltoreq.w.ltoreq.85, 10.ltoreq.x.ltoreq.25, 0<y.ltoreq.7, and 0<z.ltoreq.3, wherein both the above alloys could contain other unavoidable elements. The alloy is in a single .alpha.-phase state at room temperature.

Abstract: The invention relates to the use of a brass alloy with a high degree of cold workability for sanitary pipes, comprising 60.5-63.2% Cu, 2%-3.7% Pb, the balance Zn, plus normal impurities, wherein the effective copper equivalent is 63%-64.5% Cu. The use of cheap scrap in production of the alloy is possible by virtue of admitting lead and impurities. A very good degree of cold workability is afforded by virtue of the copper equivalent which is comparable to that of MS 63. The use of cheap return scrap causes the production costs for the alloy to be significantly below those of MS 63.

Abstract: A plumbing fixture or fitting fabricated from a bismuth and mischmetal containing copper alloy.

Abstract: A copper alloy material excellent in the resistance to corrosion caused by lubricating oils containing sulfur-based additives. The alloy comprises from over 5 to 50% Ni, 0.1-2% Ag and the balance consisting substantially of Cu, and optionally contains at least one member selected among (1) up to 20% Sn, up to 0.5% P, up to 5% Al, up to 1% Si, up to 5% Mn, up to 30% Zn, up to 10% Fe and/or up to 1% Sb, (2) up to 30% in total of Pb and/or Bi, (3) up to 30% in total of graphite MoS.sub.2. WS.sub.2 and/or BN, (4) up to 20% in total of Al.sub.2 O.sub.3, SiC, SiO.sub.2. Fe.sub.3 P, AlN, Si.sub.3 N.sub.4, TiC, WC, BN, NiB and/or FeB, and (5) 0.001-1% S.

Abstract: 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 4.5-8.00Cu the remainder.

Abstract: 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 1.0-2.0% Al 4.0-5.5% Cu the remainder.

Abstract: A copper based alloy consists essentially, by weight %, of 15 to 35% Zn, 7 to 14% Ni, 0.1 to 2% or less Mn, 0.01 to 0.5% Fe, 0.0005 to 0.1% P, at least one or two elements selected from the group consisting of 0.001 to 0.9% Si, 0.0003 to 0.02% Pb, and 0.0003 to 0.01% C, the total content of the selected at least two elements being limited to a range of 0.0006 to 0.9%, and the balance of Cu and inevitable impurities. The copper based alloy has excellent blankability as well as good corrosion resistance and high strength.

Abstract: 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 least two grain refiners are selected from the group consisting of B, In, Ag, Ti, Co, Zr, Nb, Ta, Mo, Ga, Tl, and V. At least one of the grain refiners is selected from the group consisting of B, Ti, Co, Zr, Nb, Ta, Mo, Ga, Tl, and V and is between 0.0001% and 0.01% of the alloy. If Ag or In is a selected grain refiner, it is less than 0.25% of the alloy. Silver and gallium are preferred grain refiners.

Abstract: A wear resistant copper alloy composition which includes:______________________________________ Component (% by weight) ______________________________________ Zn 20 to 40 Al 2 to 11 at least one iron family metal 1 to 5 selected from Fe, Ni, and Co Ti 0.1 to 4 Component X, which is at least one Mn = 0.01 to less than 0.1 of Mn or S, in the amounts S = 0.0005 to 0.01 indicated Cu (with unavoidable impurities) balance. ______________________________________The copper alloy, which contains as an optional component Mg (from 0.01 to 0.5% by weight), is particularly suitable for manufacturing synchronizer rings in automatic transmissions for internal combustion engines.

Abstract: A drinking water installation is made up of a source of drinking water and equipment for delivering the drinking water. In the equipment for delivering drinking water, a copper-zinc alloy which does not contain lead or bismuth is used. This alloy has a copper to zinc ratio of from 1.3 to 2.0 and contains at least one additive for improving the properties of the alloy. This alloy possesses superior machinability properties and yet does not pose the potential toxic hazard that lead- or bismuth-containing alloys do.

Abstract: 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% Mn and 0 to 2% Pb, with the balance being zinc and unavoidable impurities. The Ni:Si ratio is about 3 to 5:1, and the structure consists of at least 75% .beta.-phase, with the balance .alpha.-phase, in the absence of a .gamma.-phase. Nickel silicides occur predominantly as a round intermetallic phase. The alloy provides quite substantially higher levels of resistance to wear.

Abstract: Reduced-lead yellow brass alloys are disclosed. The alloys comprise copper; zinc; an amount of bismuth effective to enhance castability of the alloys; and an amount of selenium effective to increase machinability of the alloy. Preferably, the alloys further include an amount of antimony effective to inhibit dezincification of the alloys. In a particularly preferred embodiment, an alloy according to the present invention comprises zinc; copper in an amount ranging from about 62.5% to about 64.0% by weight; tin in an amount ranging from about 0.2% to about 0.4% by weight; iron in an amount ranging from about 0.1% to about 0.3% by weight; nickel in an amount ranging from about 0.15% to about 0.25% by weight; aluminum in an amount ranging from about 0.3% to about 0.6% by weight; bismuth in an amount ranging from about 0.8% to about 1.0% by weight; antimony in an amount ranging from about 0.02% to about 0.04% by weight; and selenium in an amount ranging from about 0.05% to about 0.25% by weight.

Abstract: There is provided a machinable .alpha.+.beta. brass containing bismuth and phosphorous. By maintaining the phosphorous content within a critical range, the alloy exhibits good elevated temperature tensile elongation in the temperature range of 100.degree. C.-350.degree. C. without a decrease in machinability due to phosphide formation. In preferred embodiments, the alloy further contains a tin addition for enhanced corrosion resistance. The combination of tin and phosphorous provides enhanced corrosion resistance to the alloy than could be predicted from either addition alone.

Abstract: 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 % can be cast into a chill mold without any problems and, additionally, solidifies from the melt relatively finely grained and thus virtually free of shrinkholes. Further, grain refining with boron is possible in spite of a Cu content that is increased compared to the known alloys, if the elements Mn, Si and Sb are added by alloying in amounts according to the invention and if, simultaneously, the Fe content can be limited to a maximum of 0.25 wt %. Furthermore, the alloy is provided with enhanced hot shortness if the Sn content is as low as possible but, at least, does not exceed 0.25 wt %. The occurrence of hard inclusions is strongly repressed.

Abstract: There are disclosed processing methods to improve the properties of copper base alloys containing chromium and zirconium. One method of processing results in a copper alloy having high strength and high electrical conductivity. A second method of processing results in a copper alloy with even higher strength and a minimal reduction in electrical conductivity. While a third method of processing results in a copper alloy having improved bend formability.

Abstract: A copper based alloy for use as a material for electrical and electronic parts has a chemical composition by weight, of 0.5 to 3% Ni, 0.1 to 0.9% Sn, 0.08 to 0.8% Si, 0.1 to 3 Zn, 0.007 to 0.25% Fe, 0.001 to 0.2% P, 0.001 to 0.2% Mg, 0.0001 to 0.001% C, and if required, further containing 0.001 to 0.3% at least one element of Cr and Zr, and the balance being Cu and inevitable impurities. The obtained copper alloy is excellent in electric conductivity, solder-exfoliation resistance when bent, high-temperature creep strength, and migration resistance, while being superior in hot workability and blankability to the conventional copper based alloy.

Abstract: A copper-based alloy, viz. a dezincification-resistant brass, excels in various properties such as resistance to dezincification, hot forgeability and machinability and, therefore, tolerates use particularly in the atmosphere of a corrosive aqueous solution. The brass of one species has a composition of 59.0 to 62.0 wt % of Cu, 0.5 to 4.5 wt % of Pb, 0.05 to 0.25 wt % of P, 0.5 to 2.0 wt % of Sn, 0.05 to 0.30 wt % of Ni, with or without 0.02 to 0.15 wt % of Ti, and the balance of Zn and unavoidable impurities. The brass of another species has a composition of 61.0 to 63.0 wt % of Cu, 2.0 to 4.5 wt % of Pb, 0.05 to 0.25 wt % of P, 0.05 to 0.30 wt % of Ni, with or without 0.02 to 0.15 wt % of Ti, and the balance of Zn and unavoidable impurities.

Abstract: A copper based casting alloy in which lead is replaced by 0.1 to 7 wt % bismuth and 0.1 to 2 wt % mischmetal or its rare earth equivalent is used to improve the distribution of bismuth in the alloy. The alloy is further defined by additions of tin, zinc, nickel, manganese, silicon, aluminum, iron and/or antimony.

Abstract: A copper-nickel based alloy, which comprises 3 to 25 wt % of Ni, 0.1 to 1.5 t % of Mn, 0.0001 to 0.01 wt % of B and the rest being Cu and an unavoidable element.

Abstract: Alloys for brazing used in heat exchangers, particularly in radiators. The alloys contain 14-31% by weight zinc, 0.1-15% by weight iron, 0.001-0.05% by weight phosphorus and 0-0.09% by weight arsenic, the balance being copper and incidental impurities.

Abstract: A copper alloy contains beryillium ranging from 0.2 to 0.7% in weight, nickel ranging from 0.1% to 2% in weight, and the balance copper and incidental impurities. Preferably, the incidental impurities include sulfur. A first preferable additional substance includes cobalt, zirconium or iron. A second preferable substance includes tin or zinc. A lead frame with a fine lead pattern is formed from a sheet of the copper alloy without burr, thereby improving the production yield of the lead frame.

Abstract: 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, nickel or manganese.

Abstract: 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. Silver and boron are preferred grain refiners.

Abstract: A suitable casting alloy for use in a fluid treatment device may be made as a copper-nickel-zinc-tin (CU--NI--ZN--SN) alloy without the addition of silver, silicon or magnesium, if certain identified trace metals are kept below certain levels. It appears that the previously identified additive metals, which are either expensive or dangerous, act to counteract the deleterious effects of these trace contaminants, and are not necessary of the contaminants are controlled. A method of forming the alloy prevents the explosive reactions encountered when melting together metals having significantly differing vaporization and melting temperatures.

Abstract: A Mn-Si-Co-Fe-based high-strength brass alloy comprises, on the weight basis, 15 to 25% of Zn, 1.0 to 5.0% of Mn, 0.3 to 2.0% of Si, 0.01 to 0.5% of Fe, 0.01 to 2.0% of Co, 0.2 to 1.0% of Sn, 5 to 10% of Pb and the balance being Cu and inevitable impurities. The alloy has a novel intermetallic compound [Mn,Si,Co,Fe] substantially in the form of spheroids and has also fine grains. The alloy is adapted for use as sliding members or parts and has very good resistances to wear and corrosion, anti-seizing property and durability.

Abstract: An alloy, in particular for use in the manufacture of jewelry, frames for glasses, and the like. In order to be able to manufacture jewelry, frames for glasses, and the like of a nickel-free alloy inexpensively and well, the following alloy has been produced according to the invention, which, in percentages by weight, has the following composition: Cu 86.0-90.0 percent, Al 2.8-4.5 percent, Mn 0.4-1.3 percent, Fe 1.0-2.5 percent, Si 0-0.5 percent, the remainder being Zn.

Abstract: An alloy suited for use in water service, having less tendency for lead to dissolve in water, free cutting property and freedom from gravity segregation in casting and cracks caused by forming is provided. The alloy according to the invention comprises about 60 weight % of copper, 0.5 to 3.5 weight % of lead, at least one rare earth metal in an amount of 1/17 to 1/5 relative to lead in weight and zinc for the rest. The lead content is preferably at most 3.0% for less dissolution of lead into water, while less than 3.0% of lead is preferred for hot forged alloys.

Abstract: An alloy, in particular for the manufacture of spectacle frames, and a spectacle wire or a spectacle frame and connecting wires for electronic component parts manufactured using the alloy of the invention. In order to obtain good mechanical characteristics, for example, of the spectacle frame at low expense, the invention provides the following alloy which, in percentage by weight, is composed as follows: 63-78% copper, 3-7% nickel, 1-3% iron, 0.01-0.20% phosphorus, the remainder being zinc.

Abstract: A copper base alloy suitable for use as a material of a sliding member, superior in seizure resistance, wear resistance and corrosion resistance. The alloy comprises 1.0 to 3.5 wt % Mn, 0.3 to 1.5 wt % Si, 11.5 to 25 wt % Zn, 5 to 18 wt % Pb and the balance substantially Cu and incidental impurities, the lead being uniformly distributed through the structure of the alloy. The alloy has a microstructure of which matrix is composed of .alpha.-phase alone. The alloy can further contain at least one selected from the group consisting of 0.02 to 1.5 wt % Mg and 0.1 to 1.5 wt % Te and/or at least one selected from the group consisting of 0.5 to 3.0 wt % Ni and 0.3 to 3.0 wt % Al.

Abstract: Deflection of laser beams, irrespective as to whether this is implemented within or externally of the laser itself; necessitating the utilization of metal mirrors or reflectors of high-quality which, in short, are designated as laser mirrors or reflectors. Laser mirrors of that type require an extremely good mirror surface, a high reflective capability and a good geometric planicity, as well as a high surface hardness. Brass possessing an inherently known microduplex matrix or grain structure provides a significant improvement in the properties of laser mirrors. A material of that type has, by nature, a microcrystalline structure, possesses a freedom from stresses, a high degree of stiffness, and a good material hardness.

Abstract: Lead inclusion in copper-containing wrought alloys is coming into disfavor due to health and environmental considerations. Machinability, as well as retention of workability properties, associated with lead inclusion are assured by bismuth together with a modifying element, phosphorous, indium or tin, with such modifying element minimizes the workability-precluding embrittlement otherwise associated with bismuth. Fabrication of product dependent upon properties of the large variety of lead-containing alloys is so permitted by use of lead-free material.

Abstract: Machinable copper alloys having a reduced lead concentration are disclosed. An additive to the alloy accumulates both at the grain boundaries and intragranularly. The additive facilitates chip fracture or lubricates the tool. One additive is a mixture of bismuth and lead with the lead concentration below about 2% by weight.

Abstract: The present invention provides an alloy having improved crack growth inhibition and having high strength at high temperatures. The composition of the alloy is essentially as follows:______________________________________ Concentration in weight % Ingredient From To ______________________________________ Ni balance Co 3 13 Cr 10 16 Mo 2.5 5.5 Al 2.5 4.5 Ti 1.5 3.5 Ta 2 5 Nb 2 5 Zr 0 0.1 C 0 0.1 B 0.01 0.05 W 0 1 Re 0 3 Y 0 0.2.

Abstract: A metal liner for a shaped charge device having a ductile metal matrix and a discrete second phase is provided. The allow composition is selected so the second phase is molten when the liner is accelerated following detonation. The molten phase reduces the tensile strength of the matrix so that the liner slug is pulverized on striking a well casing. The slug does not penetrate the hole perforated in the well casing by the liner jet and oil flow into the well bore is not impeded. The liner is formed by directly casting the desired alloy to the desired shape.

Abstract: A method of producing a grain refined copper base alloy containing iron in the amount of less than 2.3% by weight and which is cast into an ingot by conventional direct chill casting. Calcium is added to the melt before casting, preferably in the form of a copper-clad or iron-clad calcium feedwire.

Abstract: A dispersion strengthened Cu (copper)-base alloy for a wear-resistant overlay formed on a metal substrate consists essentially of, by weight %,Ni: 5 to 30%;B: 0.5 to 3%;Si: 1 to 5%;Fe: 4 to 30%;Sn: 3 to 15% and/or An: 3 to 30%; andthe remainder being Cu and unavoidable impurities, and has a structure in which particles of boride and silicide of the Fe-Ni system are dispersed in a Cu-base matrix, and Cu-base primary crystals contain Sn and/or Zn in a solid solution state. If necessary, 0.1 to 5% of Al, 0.1 to 5% of Ti, and/or 1 to 10% of Mn may be added. 0.02 to 2% of C, and 0.1 to 10% of Cr and/or 0.3 to 5% of Ti may be further added. Instead of or along with Sn and/or Zn, 2 to 20% of Pb can be used, and nonsoluble Pb particles are uniformly dispersed between Cu-base .alpha. phase dendrites and serve as a solid lubricant.

Abstract: 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% Zn (all percents being on a weight basis), 2-8% Al, and at least two components (intermetallic compound forming components) selected from among the following five elements, i.e., 0.1-3% of at least one of Ti, Zr and Cr, 0.1-3% Sn, 0.1-6% of at least one of Fe, Ni and Co, 0.1-5% Mn and 0.2-2% Si, and optionally at least one additional component that differs from said selected two components and which is selected from among 0-5% Mn, 0-3% Sn and 0-3% of at least one of Ti, Zr and Cr, and the balance being Cu and incidental impurities. The ring also has either an oxide film layer of aluminum oxide base with an average thickness of 0.1-10 .mu.m or a work-hardened layer with an average thickness of 5-300 .mu.

Abstract: Utilization of a copper-zinc alloy for semifinished materials and semi-manufactured articles; especially synchronizing rings. The copper-zinc alloy is essentially constituted of 50 to 65% copper, 1 to 6% aluminum, 0.5 to 5% silicon, 5 to 8% nickel, as well as selectively 0 to 1% iron, 0 to 2% lead, 0 to 2% manganese, all in percent by weight, with zince as the remainder, as well as unavoidable impurities, whereby the nickel is overwhelmingly present in an intermetallic composition with silicon (nickel-silicide). The silicides are in round, uniformly distributed fine precipitate form.

Abstract: Copper alloys for electrical and electronic parts and its manufacturing process are disclosed. The copper alloys consist essentially of 20 to 27% Zinc, 2 to 5% Aluminum, 0.5 to 5.0% Nickel, 0.1 to 1% Silicon, and 0.01 to 0.5% Zirconium. The copper alloys are produced by hot and cold rolling, followed by a stress relief heat treatment. The copper alloys of the initial invention exhibit high strength with good spring characteristics and are advantageously used for electric and electronic parts such as connectors, springs, relays, contacts and switches.

Abstract: A copper alloy suitable for use as the material of a heat exchanger contains 1 to 4.5 wt % of Zn, 1.0 to 2.5 wt %, preferably 1.5 to 2.0 wt % of Sn, 0.005 to 0.05 wt %, preferably 0.01 to 0.04% of P, and the balance substantially Cu and inevitable impurities, and has grain size not greater than 0.015 mm, preferably below 0.01 mm. The alloy exhibits high resistance levels to corrosion such as stress corrosion cracking, dezincification corrosion and so forth, as well as superior workability, strength and solder wettability, and, hence, can suitably be used as the materials of the constituents of a heat exchanger such as tanks, tube plates and tubes.

Abstract: 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 friction coefficient. The Cu alloy of which this ring is made has one of the following compositions: (1) 17-40% Zn (all percents are on a weight basis), 2-11% Al and 50-3,000 ppm of oxygen, as well as 0.1-3.5% of at least one element selected from among Ti, Zr and V, 0.003-0.3% Mg and with at least one optional element selected from among Fe, Ni, Co, P, Ca, Mn, Sn, Si and Pb, the balance being Cu and incidental impurities; or (2) 17-40% Zn, 2-11% Al, 0.5-6% Mn, 0.1-2% Si, 0.1-3% of at least one of Fe, Ni and Co, 0.003-0.3% of Mg, and 30-1,000 ppm of oxygen, with at least one optional element selected from among P, Ca, Cr, Pb and Sn, and with the balance being Cu and incidental impurities.

Abstract: The invention concerns a metal alloy with large lattice spacings (>than 1 nm), and consisting essentially of, by weight: at least one element selected from a group A consisting of Al, Zn and Cu, total group A elements being 44-92%; at least one element selected from a group B consisting of Ag, Ga and Au, total group B elements being 0-46%, with % group A+group B=88-92%, and ##EQU1## a group C element which is Li in an amount of 7.2-12%; at least one element selected from a group D consisting of Mg, K, Na, and Ca, total group D elements being 0-12%, with % group C+% group D=8-12%, ##EQU2## and % group A+% group B+% group C+% group D=100%; said alloy additionally comprising elemental impurities in an amount of less than 1% each and less than 5% total, based on the total weight of the alloy.

Abstract: A high electroconductive copper alloy is disclosed which contains 0.003 to 1.0 wt % of Zn, 0.005 to 0.1 wt % of Mg and the remainder of Cu. Not more than 0.1 wt % of the total amount of either one or more of Cr, Mn, Fe, Co, Ni, Y, Sn, Si and Zr may be contained further, while the amount of oxygen contained is confined to not more than 100 ppm in both cases.

Abstract: An excellent material for lead frames is provided which is economical and easily punched out to produce lead frames without bending or breakage, and has both superior tensile strength and high electrical conductivity, as well as splendid heat dissipation properties and good soldering properties.

Abstract: A brass alloy, a process for the production of a brass material or semi-finished brass product from that type of a brass alloy, as well as to the utilization of the brass material; in essence, the brass alloy for semi-finished products and semi-finished articles, which in addition to a good workability must possess a high resistance to wear, especially when employed for synchronous rings. The foregoing is possible through the intermediary of entirely determined contents of chromium and/or zircon in the previously described brass alloy. The chromium contents hereby vary, on the one hand, in dependence upon the silicon contents, and on the other hand, however, also to a lesser measure upon the remaining alloy components within the range of between 0.01 to 0.15% by weight, and preferably between 0.05 and 0.1% by weight.

Abstract: There is provided a copper alloy which comprises 1.0 to 3.5 wt. % of Ni, 0.2 to 0.9 wt. % of Si, 0.02 to 1.0 wt. % of Mn, 0.1 to 5.0 wt. % of Zn, 0.1 to 2.0 wt. % of Sn, and 0.001 to 0.01 wt. % of Mg, and 0.001 to 0.01 wt. % of one or more members selected from Cr, Ti, and Zr, with the remainder being substantially Cu. The copper alloy is suitable for lead frames for semiconductors and is also suitable for terminals and connectors. The copper alloy is produced by a process which comprises starting cooling from a temperature above 600.degree. C. at a rate of 5.degree. C. per second or higher after hot rolling of an ingot of said copper alloy, performing annealing at a temperature of 400.degree. to 600.degree. C. for 5 minutes to 4 hours after cold working, performing refining finish rolling, and performing annealing at a temperature of 400.degree. to 600.degree. C. for a short time of 5 to 60 seconds.

Abstract: A metal alloy consisting essentially of about 4-16 atom percent manganese, 4-16 atom percent silicon, 0-16 atom percent tin, 0-20 atom percent zinc, 0-10 atom percent silver and about 0-10 atom percent indium, the balance being copper and incidental impurities. The alloy is adapted for brazing steels, cemented carbides to steels, copper and copper alloys to steels, copper to copper and copper alloys, and composite materials to steels and copper.

Abstract: A corrosion resisting copper alloy, especially suitable for use in fabricating heat exchangers, comprises 25 to 38% by weight zinc, 0.005 to 0.04% by weight phosphorus, the remainder of the alloy being copper, the alloy having a recrystallized grain size within the range of 2.mu. to 10.mu..

Abstract: A fine-grained shape-memory alloy of the Cu/Zn/Al type, prepared by powder metallurgy, exhibiting the beta-high temperature phase, having dispersed in the matrix dispersoids in the form of Y.sub.2 O.sub.3 and or TiO.sub.2 particles which limit grain growth, and a process for preparing this alloy using mechanical alloying.