Abstract: Disclosed are a silicon-aluminum alloy and its preparation method. The method comprises: adding aluminum metal or molten aluminum into a container, wherein the temperature of the molten aluminum is between 700° C. and 800° C.; adding a semi-metallic silicon raw material to the molten aluminum, closing a furnace cover, carrying out vacuumization, and introducing argon, to ensure that the interior of a magnetic induction furnace is in a positive-pressure state, and stirring the aluminum metal or molten aluminum with a graphite stirring head; powering on and heating so that the aluminum metal or molten aluminum is heated to 1000° C. or above and molten, and holding the temperature between 1000° C. and 1500° C.; and after alloying is completed, cooling the molten aluminum to 1000° C. or below, opening the furnace cover, pouring the silicon-aluminum alloy into a corresponding mold, and cooling for molding.

Abstract: An anticorrosion coating and an article coated with an anticorrosion coating, especially for use in an aircraft, and a method of producing a coated article and a vehicle, especially an aircraft, including an anticorrosion coating or at least one such coated article. An anticorrosion coating includes an aluminum alloy having 0.03-0.5% by weight of tin. A coated article produced at least partly from a material and having at least partly been coated with the anticorrosion coating including an aluminum alloy having 0.03-0.5% by weight of tin. A method of producing the anticorrosion coating is also disclosed.

Abstract: A method for manufacturing a high-quality aluminum casting includes preparing an aluminum alloy raw material including Si in an amount of 9-12 wt %, melting the raw material to prepare a molten metal, adding a refiner containing Ti, B, and Sr to the molten metal, injecting the molten metal into a casting apparatus to maintain the temperature of the molten metal added with the refiner at 585-610° C., and operating the casting apparatus to cast the injected molten metal into a product having a predetermined shape.

Abstract: A method of creating aluminum powder, the method comprising of blending and melting aluminum of a purity from about 99% to about 99.999% with an embrittling element or combination of embrittling elements selected from the group consisting of silicon in the amount of 1 to 30% by weight and germanium; mixing together the melted aluminum and embrittling elements such that an alloy is created; cooling the mixed alloy; cutting the cooled alloy into smaller pieces; crushing the cut pieces; and, pulverizing and milling the crushed pieces into particles with a size of less than 200 micrometers.

Abstract: A high thermal conductive casting aluminum alloy is provided as an Al—Ni—Fe-based alloy, including, based on an entire alloy of 100 wt %, nickel (Ni) added at 1.0 to 1.3 wt %, iron (Fe) added at 0.3 to 0.9 wt %, and aluminum (Al) added as a balance.

Abstract: A composition for welding or brazing aluminum comprises silicon (Si) and magnesium (Mg) along with aluminum in an alloy suitable for use in welding and brazing. The Si content may vary between approximately 4.7 and 10.9 wt %, and the Mg content may vary between approximately 0.20 wt % and 0.50 wt %. The alloy is well suited for operations in which little or no dilution from the base metal affects the Si and/or Mg content of the filler metal. The Si content promotes fluidity and avoids stress concentrations and cracking The Mg content provides enhanced strength. Resulting joints may have a strength at least equal to that of the base metal with little or no dilution (e.g., draw of Mg). The joints may be both heat treated and artificially aged or naturally aged.

Abstract: A method for estimating proper eutectic modification level in a liquid metal to minimize macro shrinkage porosity and gas bubbles during casting of aluminum automobile components, and a system and article for casting.

Abstract: A flux-cored wire for laser welding or MIG welding different materials, wherein the different materials are aluminum or an aluminum alloy material and a galvanized steel material. The flux-cored wire contains a cylindrical aluminum alloy sheath containing: aluminum, 0.8-1.9 mass % Si, at most 0.1 mass % Mn, 0.1 mass % Mg, and 0.1 mass % Fe; and a flux filled in a space within the sheath and containing 20-60 mass % cesium fluoride, wherein the percentage filling of the flux is 5-20 mass % with respect to the total mass of the flux-core wire.

Abstract: The invention relates to a solder powder for connecting components made of aluminium or aluminium alloys by brazing, in particular a brazing powder for connecting heat exchanger components. The solder powder consists of powder particles on an aluminium-silicon base having a weight fraction of more than 12% by weight of silicon, wherein the powder particles have been produced by a rapid solidification and contain uniformly distributed silicon primary crystal precipitations in the eutectic aluminium-silicon alloy structure. Coating with such a solder powder leads to a uniform distribution of the silicon on the surface of the component coated with solder powder and thus to the same good soldering results.

Abstract: An aluminum alloy material contains Si: 1.0 mass % to 5.0 mass % and Fe: 0.01 mass % to 2.0 mass % with balance being Al and inevitable impurities, wherein 250 pcs/mm2 or more to 7×105 pcs/mm2 or less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material, while 100 pcs/mm2 to 7×105 pcs/mm2 of Al-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material. An aluminum alloy structure is manufactured by bonding two or more members in vacuum or a non-oxidizing atmosphere at temperature at which a ratio of a mass of a liquid phase generated in the aluminum alloy material to a total mass of the aluminum alloy material is 5% or more and 35% or less.

Abstract: Methods and structures for photovoltaic back contact solar cells having multi-level metallization with at least one aluminum-silicon alloy metallization layer are provided.

Abstract: Disclosed is an aluminum alloy material for a heat exchanger fin, the aluminum alloy material containing Si: 1.0% to 5.0% by mass, Fe: 0.1% to 2.0% by mass, and Mn: 0.1% to 2.0% by mass with balance being Al and inevitable impurities, wherein 250 pieces/mm2 or more to 7×104 pieces/mm2 or less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material; and wherein 10 pieces/mm2 or more and 1000 pieces/mm2 or less of the Al—Fe—Mn—Si-based intermetallic compounds having equivalent circle diameters of more than 5 ?m are present in a cross-section of the aluminum alloy material. The aluminum alloy material may further contain one or more additive elements of Mg, Cu, Zn, In, Sn, Ti, V, Zr, Cr, Ni, Be, Sr, Bi, Na, and Ca.

Abstract: An efficient polishing method for polishing an alloy material to have an excellent mirror surface is provided. The alloy material contains a main component and 0.1% by mass or more of an element that has a Vickers hardness (HV) different from the Vickers hardness of the main component by 5 or more. A polishing composition used in the polishing method contains abrasive grains and an oxidant. The alloy material is preferably an aluminum alloy, a titanium alloy, a stainless steel, a nickel alloy, or a copper alloy. It is also preferable that the alloy material is subjected to preliminary polishing before being subjected to polishing in which the polishing composition is used.

Abstract: An aluminum-based sliding alloy containing 1 to 15 mass % of Si is provided. Si precipitates in the form of particles in an observation field of the aluminum-based sliding alloy. The Si particles have a maximum diameter of 0.01 to 7.5 ?m and the total area of Si particles having a diameter of not more than 5.5 ?m accounts for not less than 95% of the total area of the Si particles present in the aluminum-based sliding alloy.

Abstract: The invention relates to a special hot-dip plating alloy for a coating on the surface of a titanium alloy part, wherein the hot-dip plating alloy contains the following components by mass percentage: 8-24% of Si, 1.2-3.1% of Zn, 0.02-0.5% of RE, 0.5-3.2% of Mg, 0.05-1% of Fe, 0.05-0.5% of Cu, 1.0-2.0% of Mn, 0.5-2.0% of Cr, 0.02-0.5% of Zr, 1-2% of nano-oxide particle reinforcing agent and the balance of Al and inevitable impurities, and the nano-oxide particle reinforcing agent is selected from one or two of TiO2 and CeO2. The adoption of the hot-dip plating alloy produced by the invention can form the coating which has corrosion resistance and good wear resistance, and is well metallurgically bonded with a matrix on the surface of the titanium alloy.

Abstract: Provided herein are a water-reactive Al composite material which comprises 4NAl or 5NAl, as an Al raw material, containing, on the basis of the amount of the Al raw material, added Bi in an amount ranging from 0.8 to 1.4% by mass and Si, including the Si as an impurity of the Al raw material, in a total amount ranging from 0.25 to 0.7% by mass; a thermally sprayed Al film produced using this Al composite material; a method for the production of this Al film; and a constituent member for a film-forming chamber, which is provided, on the surface, with the thermally sprayed Al film.

Abstract: Provided are an aluminum alloy and a production method thereof. In accordance with an embodiment, an aluminum-based mother material is melted to form a molten metal. An additive including silicon oxide is added to the molten metal. At least a portion of the silicon oxide is exhausted in the molten metal. The molten metal is cast.

Abstract: Disclosed is an aluminum alloy, including: about 14˜20 wt % of Si; about 2˜7.5 wt % of Ti; about 1˜3 wt % of B; and a balance of Al as a main component, wherein wt % are based on the total weight of the aluminum alloy and wherein a ratio of Ti/B is about 2˜2.5:1.

Abstract: Provided herein are a method for the production of a water-reactive Al film which comprises the steps of melting a material which comprises 4NAl or 5NAl as an Al raw material and added In in an amount ranging from 2 to 5% by mass on the basis of the mass of the Al raw material in such a manner that the composition of the material becomes uniform; thermally spraying the resulting molten material on the surface of a base material according to the electric arc spraying technique, while using Ar gas as a spraying gas; and solidifying the sprayed molten material through quenching to thus form an Al film in which In is uniformly dispersed in Al crystalline grains; and a constituent member for a film-forming chamber, which is provided, on the surface, with this water-reactive Al film.

Abstract: An aluminum alloy including additions of scandium, zirconium, erbium and, optionally, silicon.

Abstract: The invention relates to an aluminum alloy having good electrical conductivity and good thermal conductivity for producing die-cast components, containing: 8.0 to 9.0 wt % silicon, 0.5 to 0.7 wt % iron, max. 0.010 wt % copper, max. 0.010 wt % magnesium, max. 0.010 wt % manganese, max. 0.001 wt % chromium, max. 0.020 wt % titanium, max. 0.020 wt % vanadium, max. 0.05 wt % zinc, 0.010 to 0.030 wt % strontium, and aluminum as the rest, with further elements and manufacturing-caused impurities individually max. 0.05 wt %, in total max. 0.2 wt %. The alloy is suited in particular for producing components having good electrical conductivity and good thermal conductivity in the die casting process.

Abstract: The present disclosure provides an aluminum (Al) alloy, for general casting, and a technique for producing the same. The Al alloy includes Al, Si in the range of 5 to 13 wt %, Ti in the range of 2 to 7 wt % and B in the range of 1 to 3 wt %. According to the disclosure, a TiB2 compound may be formed in the Al alloy, where the ratio of Ti:B may range from 2 to 2.5 wt %. The Al alloy of the disclosure has improved elasticity, and is suitable for general casting processes such as, for example, high pressure casting process.

Abstract: The present disclosure provides an aluminum (Al) alloy for continuous casting, and a method of making the same. The Al alloy includes Al, Si in the range of 14 to 20 wt %, Ti in the range of 2 to 7 wt % and B in the range of 1 to 3 wt %. According to the disclosure, TiB2 compound may be formed in the alloy, where the ratio of Ti:B may range from 2 to 2.5 wt %. By a process of continuously casting the molten metal, an aluminum alloy with improved elasticity may be produced.

Abstract: The present invention provides an Al—Mg series alloy sheet of high-Mg with improved press formability and homogeneity which can be applied to automobile outer panels and inner panels. This is an Al—Mg series aluminum alloy sheet having 0.5 to 3 mm in thickness cast by twin-roll continuous casting and cold rolled, comprising over 8% but not more than 14% Mg, 1.0% or less Fe, and 0.5% or less Si with the remainder being Al and unavoidable impurities wherein the mean conductivity of the aluminum alloy sheet is in the range of at least 20 IACS % but less than 26 IACS %, the strength-ductility balance (tensile strength×total elongation) as a material property of the aluminum alloy sheet is 11000 (MPa %) or more, and the homogeneity and press formability of the sheet have been improved.

Abstract: An aluminum alloy bearing includes dispersed Si particles amounting to 1.0 to 10.0 weight % of Si. In such aluminum alloy bearing, relative diffraction intensity of (111) plane of the Si particles is equal to or greater than 0.6.

Abstract: Decorative shape cast products and methods, systems, compositions and apparatus for producing the same are described. In one embodiment, the decorative shape cast products are produced from an Al—Ni or Al—Ni—Mn alloy, with a tailored microstructure to facilitate production of anodized decorative shape cast product having the appropriate finish and mechanical properties.

Abstract: An Al-based bearing alloy includes 1 to 15 mass % of Si. In the Al-based bearing alloy, an average of A/a is greater than 1 and equal to or less than 4, where A represents a distance between adjacent Si particles residing on a sliding-side surface, and a represents a length of a major axis of the Si particles.

Abstract: An aluminium extrusion having a minimum section thickness and made from an aluminium alloy includes, in weight percent, between approximately 1.0 and 1.7 manganese, and between approximately 0.5 and 1.1 silicon, less than 0.3 iron with the balance being Al and inevitable impurities each less than 0.05 weight % and totaling less than 0.15 weight %, the extrusion being formed with an extrusion ratio less than 125 to retain a fibrous grain structure in which less than 40% of the minimum section thickness is recrystallized.

Abstract: Disclosed herein are a method and an apparatus for preparing a metal composite powder by using gas spraying. The method of preparing a metal composite powder by using gas spraying includes introducing a matrix phase in a chamber, including a reinforcing phase in the chamber, melting the introduced matrix phase to form a melt, adding the reinforcing phase in the melt, stirring the melt with the added reinforcing phase to form a melt mixture, atomizing the melt mixture together with a gas to form a metal composite powder containing the reinforcing phase, and collecting the metal composite powder formed.

Abstract: An aluminium alloy product having a gauge below 200 ?m and a composition, in weight %, of Fe 1.0-1.8, Si 0.3-0.8, Mn up to 0.25, other elements less than or equal to 0.05 each and less than or equal to 0.15 in total, balance aluminium. A process of manufacturing the product includes the steps of continuous casting an aluminium alloy melt of the above composition, cold rolling the cast product without an interanneal step to a gauge below 200 ?m and final annealing the cold rolled product. The product may be a deep drawn container.

Abstract: A high-elongation rate aluminum alloy material and preparation method thereof. The high-elongation aluminum alloy material contains, in weight percentage, 0.30-1.20% of iron, 0.03-0.10% of silicon, 0.01-0.30% of rare earth elements, namely cerium and lanthanum, and the remaining aluminum and inevitable impurities. The aluminum alloy is made from materials through a fusion casting process and a half-annealing treatment. An aluminum alloy conductor made thereof has a high-elongation rate and good safety and stability in use.

Abstract: A heat exchanger use high strength aluminum alloy fin material having a high strength and excellent in thermal conductivity, elusion resistance, sag resistance, sacrificial anodization effect, and self corrosion resistance, characterized by containing Si: 0.8 to 1.4 wt %, Fe: 0.15 to 0.7 wt %, Mn: 1.5 to 3.0 wt %, and Zn: 0.5 to 2.5 wt %, limiting the Mg as an impurity to 0.05 wt % or less, and having a balance of ordinary impurities and Al in chemical composition, having a metal structure before brazing of a fibrous crystal grain structure, a tensile strength before brazing of not more than 240 MPa, a tensile strength after brazing of not less than 150 MPa, and a recrystallized grain size after brazing of 500 ?m or more.

Abstract: Disclosed is an aluminum casting material including aluminum, silicon, titanium and boron, particularly 81-93 wt % of aluminum, 5-13 wt % of silicon, 1-3 wt % of titanium and 1-3 wt % of boron. The aluminum casting material has superior elasticity compared to that of a conventional aluminum alloy, even without employing a material of high cost such as carbon nanotube (CNT). While the application of the conventional aluminum alloy is largely restricted to a low pressure casting process, the aluminum material of the present invention can be applied to all common casting processes including a high pressure casting.

Abstract: A method of forming a silicon anode material for rechargeable cells includes providing a metal matrix that includes no more than 30 wt % of silicon, including silicon structures dispersed therein. The metal matrix is at least partially etched to at least partially isolate the silicon structures.

Abstract: An aluminum-based bearing alloy material and a bearing made therefrom is described, the bearing material having a composition comprising in weight %: 5-10 tin; 0.8-1.3 copper; 0.8-1.3 nickel; 1.5-3 silicon; 0.13-0.19 vanadium; 0.8-1.2 manganese; 0.4-0.6 chromium; balance aluminum apart from incidental impurities.

Abstract: There is provided a hydrogen gas generating member which safely facilitates the hydrogen gas generation reaction by bringing an Al alloy which is subjected to rolling treatment or powdering treatment into contact with water. A hydrogen gas generating member 20 includes a texture in which Al is finely dispersed in a metal matrix, where hydrogen gas is generated by bringing the hydrogen gas generating member into contact with water. A fixing member 14 for mounting the hydrogen gas generating member 20 is provided in a hydrogen generating apparatus 10 and is brought into contact with a water 15 that is stored inside. The hydrogen gas generated from the surface is supplied outside through a hydrogen gas collecting, pipe 12 and stored in a storage tank (not shown).

Abstract: The present invention relates to an Al—Ni—La—Si system Al-based alloy sputtering target including Ni, La and Si, in which, when a section from (¼)t to (¾)t (t: thickness) in a cross section vertical to a plane of the sputtering target is observed with a scanning electron microscope at a magnification of 2000 times, (1) a total area of an Al—Ni system intermetallic compound having an average particle diameter of 0.3 ?m to 3 ?m with respect to a total area of the entire Al—Ni system intermetallic compound is 70% or more in terms of an area fraction, the Al—Ni system intermetallic compound being mainly composed of Al and Ni; and (2) a total area of an Al—Ni—La—Si system intermetallic compound having an average particle diameter of 0.2 ?m to 2 ?m with respect to a total area of the entire Al—Ni—La—Si system intermetallic compound is 70% or more in terms of an area fraction, the Al—Ni—La—Si system intermetallic compound being mainly composed of Al, Ni, La, and Si.

Abstract: [PROBLEMS] To provide an aluminum alloy fin material for a heat exchanger, which has high strength and high heat conductivity after brazing, and is excellent in the resistance to sagging, erosion and self-corrosion and the in the sacrificial anode effect. [MEANS FOR SOLVING PROBLEMS] A method for producing an aluminum alloy fin material for a heat exchanger which comprises providing a molten aluminum alloy having a chemical composition, in wt %, that Si: 0.5 to 1.5%, Fe: 0.15 to 1.00%, Mn: 0.8 to 3.0%, Zn: 0.5 to 2.5%, with the proviso that the content of Mg as an impurity is limited to 0.05 wt % or less, and the balance: Al and inevitable impurities, casting the molten alloy continuously into a thin slab having a thickness of 5 to 10 mm by the use of a twin belt casting machine, winding up the slab into a roll, cold-rolling the slab into a sheet having a thickness of 0.05 to 2.0 mm, subjecting the sheet to an inter annealing at 350 to 500° C.

Abstract: An aluminum alloy wire material, which has an alloy composition containing: 0.1 to 0.4 mass % of Fe, 0.1 to 0.3 mass % of Cu, 0.02 to 0.2 mass % of Mg, and 0.02 to 0.2 mass % of Si, and further containing 0.001 to 0.01 mass % of Ti and V in total, with the balance being Al and unavoidable impurities, in which a grain size is 5 to 25 ?m in a vertical cross-section in a wire-drawing direction thereof, and an average creep rate between 1 and 100 hours is 1×10?3 (%/hour) or less by a creep test under a 20% load of a 0.2% yield strength at 150° C.

Abstract: The present invention relates to a method of making an aluminium alloy product having a gauge below 200 ?m. It also relates to an aluminium alloy product having a gauge below the same value and to containers for food packaging applications made from the aluminium alloy product. The invention is a process of manufacturing an aluminium alloy comprising the following steps: continuous casting an aluminium alloy melt of the following composition, (in weight %): Fe 1.0-1.8, Si 0.3-0.8, Mn up to 0.25, other elements less than or equal to 0.05 each and less than or equal to 0.15 in total, balance aluminium, cold rolling the cast product without an interanneal step to a gauge below 200 ?m and final annealing the cold rolled product.

Abstract: An aluminum alloy casting material for heat conduction obtained by adding Si to an aluminum alloy casting material with enhanced castability thereby realize enhancement of thermal conductivity. There is provided an aluminum alloy casting material excelling in heat conduction. characterized in that it comprises 5 to 10.0 mass % of Si, 0.1 to 0.5 mass % of Mg and the balance of Al and unavoidable impurities, the aluminum alloy casting material having undergone an aging treatment. Further, there is provided a cast aluminum alloy casting material that while having castability and mechanical strength equivalent to or higher than those of conventional cast aluminum alloys, is also enhanced in heat conduction; and provided a process for producing the cast aluminum alloy. In particular, there are provided a cast aluminum alloy and process for producing the same, wherein Si is contained in an amount of 6.0 to 8.0 mass %, the elements other than Si and Al each in simple form in an amount of ?0.

Abstract: A process for producing a foamed metal article comprises the steps of combining together at least one metal powder, silicon powder a gas-producing blowing agent to form a mixture; including graphite along with said mixture; compacting the mixture into a foamable metal precursor; placing the foamable metal precursor in a carrier; and heating the foamable metal precursor in the carrier to at least a predetermined temperature for at least a predetermined amount of time, to thereby cause the foamable metal precursor to foam, thus producing a foamed metal article.

Abstract: A process for producing a foamed metal article comprises the steps of combining together at least one metal powder, silicon powder a gas-producing blowing agent including hydrated magnesium silicate powder, and graphite to form a mixture; compacting the mixture into a foamable metal precursor; placing the foamable metal precursor in a carrier; and heating the foamable metal precursor in the carrier to at least a predetermined temperature for at least a predetermined amount of time, to thereby cause the foamable metal precursor to foam, thus producing a foamed metal article.

Abstract: An aluminum alloy sheet for a lithographic printing plate is obtained by homogenizing an ingot of an aluminum alloy at 500 to 610° C. for one hour or more, the aluminum alloy containing 0.03 to 0.15% of Si, 0.2 to 0.6% of Fe, 0.005 to 0.05% of Ti, and 2 to 30 ppm of Pb, with the balance being aluminum and unavoidable impurities, subjecting the homogenized product to rough hot rolling, a start temperature of the rough hot rolling being 430 to 500° C. and a finish temperature of the rough hot rolling being 400° C. or more, holding the product subjected to rough hot rolling for 60 to 300 seconds after the completion of the rough hot rolling to recrystallize the surface of the product, and subjecting the resulting product to finish hot rolling that is finished at 320 to 370° C.

Abstract: A method for producing a high strength aluminum alloy brackets, cases, tubes, ducts, beams, spars and other parts containing L12 dispersoids from an aluminum alloy powder containing the L12 dispersoids. The powder is consolidated into a billet having a density of about 100 percent. The billet is extruded using an extrusion die shaped to produce the component.

Abstract: Provided herein are a method for the production of a water-reactive Al film which comprises the steps of melting a material which comprises 4NAl or 5NAl as an Al raw material and added In in an amount ranging from 2 to 5% by mass on the basis of the mass of the Al raw material in such a manner that the composition of the material becomes uniform; thermally spraying the resulting molten material on the surface of a base material according to the electric arc spraying technique, while using Ar gas as a spraying gas; and solidifying the sprayed molten material through quenching to thus form an Al film in which In is uniformly dispersed in Al crystalline grains; and a constituent member for a film-forming chamber, which is provided, on the surface, with this water-reactive Al film.

Abstract: Provided herein are a water-reactive Al composite material which comprises 4NAI or 5NAI, as an Al raw material, containing, on the basis of the amount of the Al raw material, added Bi in an amount ranging from 0.8 to 1.4% by mass and Si, including the Si as an impurity of the Al raw material, in a total amount ranging from 0.25 to 0.7% by mass; a thermally sprayed Al film produced using this Al composite material; a method for the production of this Al film; and a constituent member for a film-forming chamber, which is provided, on the surface, with the thermally sprayed Al film.

Abstract: The invention concerns a method for producing a substance during which an aluminum base alloy is produced that has a content of 5.5 to 13.0% by mass of silicon and a content of magnesium according to formula Mg [% by mass]=1.73×Si [% by mass]+m with m=1.5 to 6.0% by mass of magnesium, and has a copper content ranging from 1.0 to 4.0% by mass. The base alloy is then subjected to at least one hot working and, afterwards, to a heat treatment consisting of solution annealing, quenching and artificial aging. The magnesium is added based on the respectively desired silicon content according to the aforementioned formula. The material obtained by using the inventive method comprises having a low density and a high strength.

Abstract: An aluminum alloy fin material for brazing, characterized by comprising an aluminum alloy comprising more than 1.4% by mass but not more than 1.8% by mass of Fe, 0.8% by mass or more but 1.0% by mass or less of Si, and more than 0.6% by mass but not more than 0.9% by mass of Mn, with the balance being Al and inevitable impurities, wherein 80% or more of the surface area, as viewed from the surface layer of the fin plane, is occupied by recrystallized grains with a length of 10 mm or more, in a direction rolled.

Abstract: An aluminum-based casting alloy having improved corrosion resistance and casting characteristics for sand and permanent mold casting processes. The aluminum-based casting alloy contains from about 4.0 to about 7.0 percent silicon by weight, at least 87 percent aluminum by weight, from about 0.25 percent to about 0.5 percent manganese by weight, a maximum of 0.08 percent copper by weight, and from about 0.2 percent to about 0.8 percent iron by weight.