US3787248A - Process for preparing aluminum alloys - Google Patents

Process for preparing aluminum alloys Download PDF

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US3787248A
US3787248A US00291835A US3787248DA US3787248A US 3787248 A US3787248 A US 3787248A US 00291835 A US00291835 A US 00291835A US 3787248D A US3787248D A US 3787248DA US 3787248 A US3787248 A US 3787248A
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process according
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aluminum
alloy
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J Winter
W Setzer
H Cheskis
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/34—Arrangement or construction of pull or lift tabs

Definitions

  • ABSTRACT The present invention teaches a process for preparing high strength, improved formability aluminum base alloys suitable for use as can end stock, said high strength aluminum material of the present invention being readily compatible with aluminum can body material.
  • the present invention also teaches an improved aluminum can having ends and body of substantially the same aluminum base alloy, which can as a whole is especially convenient to process in scrap reclamation procedures.
  • alloys 5082 or 5182 are commonly used for the can end and alloy 3004 is commonly used for the can body.
  • alloys 5082 or 5182 are commonly used for the can end and alloy 3004 is commonly used for the can body.
  • the can end alloys with their relatively high magnesium content are a major cause of recycling problems. In remelting the cans, the magnesium oxidizes readily and is lost. In addition, the oxides can be trapped in the melt and result in inferior ingots.
  • the can body alloys for example, alloy 3004, with a lower magnesium content, have not been successfully used for can ends because of low strength and ductility properties.
  • Accordinglyfit is a principal object of the present invention to provide a process for preparing high strength aluminum alloys having improved formability suitable for use as can end stock.
  • the process of the present invention provides a high strength aluminum base alloy having improved formability and comprises:
  • the alloy is thermally stabilized at a temperature of from 250 to 450F for a period of time of at least 5 seconds but no greater than defined by the formula set forth above, wherein T and t are as defined above.
  • the stabilization treatment may be combined with the standard coating operation in which the can end stock is coated with a polymeric material prior to use.
  • the present invention also resides in an improved aluminum can having ends and body thereof of substantially the same composition, namely, both the ends and body thereof consist essentially of from 0.4 2.0 percent magnesium, 0.5 2.0 percent manganese, balance essentially aluminum, wherein at least one end thereof has a minimum stretch forming height to diameter ratio of 0.210 and generally 0.242.
  • FIG. 1 illustrates a fragmentary perspective view of a sealed container of the present invention
  • FIG. 2 is a sectional view on an exaggerated scale of the tab element illustrated in FIG. 1 taken through line DETAILED DESCRIPTION
  • the process of the present invention enables the preparation of an improved aluminum can wherein the ends and body thereof have substantially the same chemical composition, as indicated hereinabove.
  • the process of the present invention imparts significant improved physical characteristics to the can top material of the present invention.
  • the aluminum material processing herein is characterized by suprisingly improved strength, ductility, formability and thermal stability.
  • the improved characteristics of the can top of the present invention enable this material to be readily processed into commercial can ends utilizing conventional manufacturing equipment. This is a particular advantage in view of the large scale use of this equipment.
  • the improved physical characteristics of the alloy herein, imparted by the process surprising advantage of the present invention will be discussed in greater detail hereinbelow.
  • conventional materials used currently for can ends include aluminum alloy 5182 having the following composition limits: Silicon, up to 0.20 percent; iron, up to 0.35 percent; copper, up to 0.15 percent; manganese, from 0.20 to 0.50 percent; magnesium, from 4.0 to 5.0 percent; chromium, up to 0.10 percent; zinc, up to 0.25 percent; titanium, up to 0.10 percent; balance aluminum.
  • the process of the present invention provides the following features on the alloys processed herein, which have substantially the same composition as the aluminum can body currently used.
  • aluminum alloy 3004 which has the following composition limits: Manganese, from 1.0 to 1.5 percent; magnesium, from 0.8 to 1.3 percent; zinc, up to 0.25 percent; balance aluminum, the following represents advantages of the processing of the present invention.
  • the processing of the present invention achieves superior stretch forming characteristics over the conventionally used alloy 5182.
  • the 3004 can end processed in accordance with the present invention requires less load than conventional 5182 to initiate tab removal and yet still maintain safe handling characteristics in the resultant can end. This represents a particularly desirable feature since the can may be safely handled during filling, packing and shipping, and still be more easily opened by the ultimate consumer.
  • a particular advantage of the material processed in accordance with the present invention is its superior strength, ductility combination over the same material processed in a conventional manner.
  • the process of the present invention permits an alloy, such as 3004, to be readily formed into can ends because of the enhanced ductility imparted thereby, and yet material mateiral is still strong enough to safely contain the pressurized contents.
  • An additional advantage of the material processed in accordance with the present invention is that it achieves superior thermal stability to conventionally processed materials such that a high yield strength can be maintained after the final thermal treatment. Furthermore, this enhanced thermal stability permits a broader range of thermal treatment during the coating process over conventionally processed material, that is, higher temperatures for longer times may be utilized which represents an advantage commercially.
  • An additional and surprising advantage of the process ofthe present invention is that it enables a can end material which is more corrosion resistant then can ends formed from conventional materials such as aluminum alloy 5182. Also, no galvanic corrosion is possible since the entire can utilizes one alloy throughout.
  • the process of the present invention provides an aluminum base alloy consisting of from 0.5 to 2.0 percent manganese, from 0.4 to 2.0 percent magnesium, balance essentially aluminum.
  • the alloy of the present invention preferably contemplates the inclusion of the following optional constituents, all fiwhisbmayheptcsent. n m unt as 19w as -9 and preferably as low as 0.0 l percent:Silicon, up to 0.5 percent; iron, up to 1 percent; copper, up to 0.5 percent; zinc, up to 0.5 percent; chromium, up to 0.2 per- Cent; ium 2.9.99. ,.ns snttlz tetu e 299 ⁇ percent; and titanium, up to 0.2 percent.
  • other components may be present in an amount of each 0.05 percent, total up to 0.20 percent. Naturally, conventional impurities may be contemplated.
  • the aluminum alloys utilized herein may be cast in any desired manner.
  • the particular method of casting is not critical and any commercial method may be conveniently employed, such as direct chill or tilt mold casting. It is preferred to utilize direct chill casting to provide a finely dispersed uniform particle size of second phase constituents.
  • a homogenization or solutionization treatment is utilized for a sufficient period of time to avoid macro-segregation. This homogenization treatment should be performed at a temperature from 850F to 1 150F and preferably from 1,000F to 1,l25F and the ingot should be held at temperature for from 2 hours to 24 hours.
  • the process of the present invention contemplates a series of rolling steps, each of which falls within critical temperature limits.
  • the first rolling step of the present invention is with a starting temperature in the range of 650 to 950F, with the total reduction in excess of 20 percent. Naturally, the total reduction is dependent upon ingot gage, with the material being rolled in this step to a gage of 0.5 inch or above. This rolling step is intended to break up the cast structure and get the material to a workable gage.
  • the material is then further rolled with a starting temperature in the range of 400 to 800F and with a total reduction in excess of 20 percent.
  • the total reduction in this step is preferably from 45 to 85 percent and optimally from 50 to percent.
  • the material is rolled in this step to gage of 0.100 inch or above and preferably to a gage of 0.175 to 0.250 inch. This rolling step is particularly critical in that it has been found that the starting temperature must be kept within the foregoing range in order to insure adequate strength prior to cold rolling.
  • the material is then further rolled at a starting temperature less than 400F, and preferably cold rolled, with a total reduction in this step in excess of 20 percent and preferably from 40 to percent.
  • the gage requirements here are dictated by the amount of reduction employed and the final gage requirements, e.g., the final can end stock gage.
  • the material is then held at a temperature between 250 and 450F for at least five seconds, but for a period of time no greater than defined in the following formula: T 12 log t) 12,500, wherein T is the temperature in degrees Kelvin and t is the maximum time at temperature T.
  • the temperature time combination should be such that the tensile properties of the metal are reduced no more than 20 percent. It is preferred to utilize a holding time of from 30 minutes to 8 hours and a temperature range of from 250 to 350F.
  • the cold rolling and holding steps thereof should preferably be repeated, optimally a plurality of times. Generally, no more than two or three additional cycles are utilized.
  • the process of the present invention preferably contemplates a final thermal stabilizing step.
  • This thermal stabilizing step may be readily achieved as an inherent feature of the coating process to which these materials are conventionally subjected.
  • the coating process comprises coating the can material with a polymeric material, such as an epoxy, polyvinyl chloride or a polyolefin. This step is intended to avoid deleterious reaction between the contents of the can and the aluminum alloy can or can top material.
  • the coating and curing process involves a certain holding and elevated temperature combination.
  • the thermal stabilizing step of the present invention contemplates holding said material at a temperature of from 250 to 450F for a period of time of at least 5 seconds but no greater than that which is defined by the formula set forth above.
  • the holding time is from 4 hours to 24 hours and the preferred temperature is from 250 to 375F.
  • the optimal holding times and temperatures are interrelated.
  • the stabilizing treatment is intended to insure uniform properties throughout the coil and' is important in maintaining these uniform properties. In this step the yield strength properties should not drop more than 50 percent.
  • the present invention provides an improved sheet metal product, an improved can end and also an improved aluminum can.
  • substantially the same alloy can be utilized for the can ends and body.
  • the composition consists essentially of from 0.4 to 2.0 percent magnesium, 0.5 to 2.0 percent manganese and the balance essentially aluminum.
  • additives and impurities may be utilized, so that the following limits are contemplated: Silicon, up to 0.5
  • iron up to 1.0 percent
  • copper up to 0.5 percent
  • chromium up to 0.2 percent
  • zinc up to 0.5 percent
  • titanium up to 0.2 percent
  • others up to 0.05 percent each, total 0.20 percent.
  • the present invention contemplates variations within the foregoing limits so that identical alloys need not necessarily be utilized for the can ends and body.
  • the sheet metal product of the present invention has sufficient formability to be processed into a can end, with a minimum stretch forming height to diameter ratio of 0.242.
  • the sheet metal product of the present invention possesses a minimum yield strength of 42,000 psi at 0.2 percent offset and a minimum tensile elongation of 3 percent for a gage of 0.020 inch.
  • the strip can be thermally treated, for example, at 350F for 13 hours and still maintain a minimum yield strength of 42,000 psi.
  • a container 1 has a body portion 2 and an end wall 3.
  • the end wall 3 is provided with a removable portion or tear strip 4 which is defined by scored line or lines 5.
  • a pull tab or ring pull 6 which is secured to the tear strip 4 by conventional integral rivet 7.
  • the can end 3 is secured to the body portion 2 by means of fold lock seam 8.
  • the can end is opened by pulling on pull tab or ring pull 6 which tears along scored lines 5, thus removing the tear strip 4 away from the can end.
  • the ring pull or pull tab is secured to the tear strip by means of an integral rivet which is formed directly from the container end.
  • the fabrication of the integral rivet requires that the can end material be suf ficiently formable to be made into a configuration to hold the ring attachment to the can end without fracturing in handling.
  • the integral rivet is formed in a plurality of operations which require a combination of good strength and ductility, as has been pointed out hereinabove. A typical method for forming the integral rivet may be briefly summarized below.
  • Step 1 is a stretch forming operation in which a hemispherical bubble is produced vertically downward.
  • the purpose of the formation of this hemispherical bubble is to thin the metal in the central portion of the can end and thus provide extra metal for forming. In addition, this reduces the severity of the Step 2 forming operation.
  • Step 2 In this step a small protrusion is produced vertically upward by forcing the Step I bubble in a reverse direction into a smaller die opening.
  • the operation in Step 2 is a combination of bending, stretch forming and drawing.
  • Step 3 This is the final step.
  • the can end is scored to form the tab or tear strip portion and several minor protrusions are formed to add buckling stability to the can end when the tab or tear strip is opened by the consumer.
  • the ring pull is placed around the Step 2 protrusion which is then upset to form the final integral rivet configuration.
  • a can end was made in accordance with the foregoing steps.
  • the Step I bubble was 0.080 inch in depth and the finished inside diameter was 0.394 inch.
  • the maximum metal thinning in this Step 1 was from 0.0128 to 0.00975 inch, or a reduction of 23.2 percent.
  • the final protrusion height was 0.066 inch with an inside diameter of 0.0968 inch.
  • the total height to diameter ratio for Step 2 was 0.685.
  • the top portion of the rivet was severely thinned in compression approximately 50 percent from 0.008 to 0.004 inch.
  • the sheet metal article of the present invention must have a high degree of strength, ductility and formability in order to be processed to the can top material of the present invention.
  • the coil of processed metal is first subjected to a standard coating operation in which the can end stock is coated with a polymeric material prior to use, such as an epoxy base resin.
  • the metal may pass through a continuous line where it is first covered with a solvent resin coating. It then passes through a furnace where the solvent is baked out leaving the resin coating.
  • Metal temperature during the bake cycle is conventionally in excess of 300F for a time period of from I to 3 minutes.
  • the coated metal is then fabricated into easy open can ends by stamping circular blanks from the coil, forming an end flange to provide a locus for attachment to the can body and providing a coating of latex to the flange area for use as a sealant.
  • the curled blanks are then processed as indicated hereinabove to attach the pull tab or ring pull to the can top through the integral rivet.
  • the top with pull tab attachment is then affixed to the can body by means of the curled flange, with the latex acting as a pressure sealant for the system.
  • EXAMPLE 1 Aluminum alloy 3004 was provided having the composition set forth in Table l below.
  • the material was processed in the following manner.
  • the material was homogenized at lO75F for 12 hours followed by hot rolling at a starting temperature of 800F using 10 percent reductions per pass from 2.00 to 0.600 inch. with a reheat after each reduction at 800F for 5 minutes.
  • the material was then warm rolled at a starting temperature of 550F using percent reductions per rolling pass from 0.600 to 0.250 inches, with a reheat after each pass at 550F for 5 minutes.
  • the material was then cold rolled from 0.25 to 0.060 inch using 10 percent reductions per pass.
  • the metal was then heat treated for 2 hours at 260F followed by cold rolling with a 10 percent reduction per pass from a gage of 0.060 to 0.030 inch.
  • the material was then heat treated at 260F for 2 hours followed by cold rolling to final gage.
  • the material was then stabilized at 350F for 1 hour.
  • the foregoing represents the processing of the present invention.
  • EXAMPLE ll The material set forth in Table l above was processed for comparative purposes in the following manner. The material was homogenized at a temperature l050F for 12 hours followed by hot rolling to 0.250 inch gage using a starting temperature of 825F and a finish temperature of 650F. The material was then cold rolled from 0.250 inch to final gage. The material was stabilized at 350F for 1 hour.
  • alloy 5182 was processed in the manner set forth below.
  • the alloy had the composition set forth in Table ll below.
  • the material was homogenized at a 975F for 15 hours followed by hot rolling at 825F to 0.150 inch using a 10 percent reduction per pass and reheating at 825F for 5 minutes after each pass. The material was then cold rolled from 0.150 to 0.0125 inch and then stablized at 450F for 15 minutes.
  • EXAMPLE IV The material of the present invention processed in accordance with Example I above has improved yield strength to ductility properties when compared to the conventionally processed material of Example ll above.
  • the strength to ductility ratio is important in producing a can end since the product must have sufficient strength and be sufficiently ductile to be formed into the integral rivet as set forth hereinabove.
  • standard 2 inches gage length tensile tests were performed on samples of material processed in accordance with Example l and Example ll, with the exception that the material of Example ll was not given a final stabilizing treatment since this would degrade the strength properties.
  • This example illustrates the improved stretch forming characteristics of the material processed in accordance with Example I over the material processed in Example lll.
  • Samples processed in accordance with Examples 1 and Ill were tested for stretch formability, a property which is critical in the formation of the integral rivet. This test was conducted by penetrating the metal with a punch of 0.100 inch diameter until the metal failed. The depth of penetration (H) at failure divided by the punch diameter (D) is a measure of the stretch forming capability of the metal.
  • the following table shows the stretch forming capability (H/D) of the two materials. It can be clearly seen that the material processed in accordance with the present invention has improved stretch forming characteristics.
  • a process for providing high strength and improved formability in an aluminum base alloy which comprises:
  • step (F) A process according to claim 2 wherein the material is held in step (F) for a period of time of from 30 minutes to 8 hours.
  • step (F) thermally stabilized following step (F) at a temperature of from 250 to 450F for a period of time defined by the following formula: T 12 log t) 12,500, wherein T and t are as defined above.
  • step (F) the material is coated with a polymeric material at an elevated temperature.
  • step (D) 8. A process according to claim 2 wherein the mate rial is rolled in step (D) with a total reduction of from 45 to 85 percent to a gage of 0.100 inch or above.
  • step (E) 9. A process according to claim 2 wherein the material is cold rolled in step (E) with a total reduction of from 40 to percent.
  • a process according to claim 2 wherein said alloy contains: Silicon, up to 0.5 percent; iron, up to l percent; copper, up to 0.5 percent; zinc, up to 0.5 percent; chromium, up to 0.2 percent; beryllium, up to 0.01 percent; boron, up to 0.01 percent; titanium, up to 0.2 percent; others each up to 0.05 percent, total up to 0.20 percent.
  • steps (E) and (F) are repeated a plurality of times.

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  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)
US00291835A 1972-09-25 1972-09-25 Process for preparing aluminum alloys Expired - Lifetime US3787248A (en)

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JP (2) JPS5615462B2 (sv)
CA (1) CA991062A (sv)
DE (1) DE2342253C2 (sv)
FR (1) FR2200367B1 (sv)
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Cited By (30)

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US3930895A (en) * 1974-04-24 1976-01-06 Amax Aluminum Company, Inc. Special magnesium-manganese aluminum alloy
US4035201A (en) * 1975-06-30 1977-07-12 Aluminum Company Of America Method of making a container including an aluminum panel having a portion removable by tearing
DE2901020A1 (de) * 1978-08-04 1980-02-14 Alusuisse Verfahren zur herstellung eines bandes aus einer aluminiumlegierung fuer dosen und deckel
US4260419A (en) * 1978-08-04 1981-04-07 Coors Container Company Aluminum alloy composition for the manufacture of container components from scrap aluminum
EP0028059A1 (en) * 1979-08-30 1981-05-06 Alcan Research And Development Limited Cold-rolled aluminium alloy sheet product
US4269632A (en) * 1978-08-04 1981-05-26 Coors Container Company Fabrication of aluminum alloy sheet from scrap aluminum for container components
US4282044A (en) * 1978-08-04 1981-08-04 Coors Container Company Method of recycling aluminum scrap into sheet material for aluminum containers
US4318755A (en) * 1980-12-01 1982-03-09 Alcan Research And Development Limited Aluminum alloy can stock and method of making same
DE3102759A1 (de) * 1980-01-28 1982-04-22 Kobe Steel, Ltd., Kobe, Hyogo Verfahren zur herstellung von legierungssubstraten auf al-basis fuer magnetische aufzeichnungsmaterialien und rohling fuer die herstellung eines solchen substrats
EP0057959A1 (de) * 1981-02-06 1982-08-18 Vereinigte Deutsche Metallwerke Ag Aluminium-Knetlegierung
EP0121620A1 (en) * 1983-04-11 1984-10-17 Kabushiki Kaisha Kobe Seiko Sho Bake-hardenable aluminium alloy sheets and process for manufacturing same
US4707195A (en) * 1984-03-05 1987-11-17 Sumitomo Light Metal Industries, Ltd. Aluminum alloy sheet for containers excellent in corrosion resistance and method of producing same
US4976790A (en) * 1989-02-24 1990-12-11 Golden Aluminum Company Process for preparing low earing aluminum alloy strip
US5104465A (en) * 1989-02-24 1992-04-14 Golden Aluminum Company Aluminum alloy sheet stock
US5106429A (en) * 1989-02-24 1992-04-21 Golden Aluminum Company Process of fabrication of aluminum sheet
US5110545A (en) * 1989-02-24 1992-05-05 Golden Aluminum Company Aluminum alloy composition
EP0594509A1 (en) * 1992-10-23 1994-04-27 The Furukawa Electric Co., Ltd. Process for manufacturing Al-Mg alloy sheets for press forming
US5976279A (en) * 1997-06-04 1999-11-02 Golden Aluminum Company For heat treatable aluminum alloys and treatment process for making same
US5985058A (en) * 1997-06-04 1999-11-16 Golden Aluminum Company Heat treatment process for aluminum alloys
US5993573A (en) * 1997-06-04 1999-11-30 Golden Aluminum Company Continuously annealed aluminum alloys and process for making same
EP1129228A1 (en) * 1998-09-21 2001-09-05 Gibbs Die Casting Aluminum Corporation Aluminum die cast alloy having high manganese content
US6325872B1 (en) 1995-03-09 2001-12-04 Nichols Aluminum-Golden, Inc. Method for making body stock
US6579387B1 (en) 1997-06-04 2003-06-17 Nichols Aluminum - Golden, Inc. Continuous casting process for producing aluminum alloys having low earing
US20030173003A1 (en) * 1997-07-11 2003-09-18 Golden Aluminum Company Continuous casting process for producing aluminum alloys having low earing
US20040007295A1 (en) * 2002-02-08 2004-01-15 Lorentzen Leland R. Method of manufacturing aluminum alloy sheet
US8999079B2 (en) 2010-09-08 2015-04-07 Alcoa, Inc. 6xxx aluminum alloys, and methods for producing the same
WO2013103957A3 (en) * 2012-01-05 2015-06-18 Golden Aluminum Company Used beverage container aluminum composition and method
EP2941491A4 (en) * 2013-01-07 2016-10-05 Golden Aluminum Inc ALUMINUM COMPOSITION FORMED FROM USED BEVERAGE CONTAINERS AND CORRESPONDING METHOD
US9587298B2 (en) 2013-02-19 2017-03-07 Arconic Inc. Heat treatable aluminum alloys having magnesium and zinc and methods for producing the same
US9926620B2 (en) 2012-03-07 2018-03-27 Arconic Inc. 2xxx aluminum alloys, and methods for producing the same

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US4111721A (en) * 1976-06-14 1978-09-05 American Can Company Strip cast aluminum heat treatment
US4238248A (en) * 1978-08-04 1980-12-09 Swiss Aluminium Ltd. Process for preparing low earing aluminum alloy strip on strip casting machine
JPS5732350A (en) * 1980-08-06 1982-02-22 Sukai Alum Kk Aluminum alloy plate for can with superior pressure resistance and its manufacture
US4502900A (en) * 1981-02-06 1985-03-05 Vereinigte Deutsche Metallwerke Ag Alloy and process for manufacturing rolled strip from an aluminum alloy especially for use in the manufacture of two-piece cans
JPS57143472A (en) * 1981-03-02 1982-09-04 Sumitomo Light Metal Ind Ltd Manufacture of aluminum alloy sheet for forming
FR2526047A1 (fr) * 1982-04-30 1983-11-04 Conditionnements Aluminium Procede de fabrication de produits en alliage d'aluminium aptes a l'etirage
ES8501003A1 (es) * 1982-07-15 1984-11-01 Continental Group Procedimiento para fabricar material de banda de aleacion de aluminio apropiado para la fabricacion de articulos embutidos y adelgazados en las paredes
JPS59124259A (ja) * 1982-12-29 1984-07-18 日本軽金属株式会社 炭酸飲料用の全面開口アルミニウム缶
JPS61261466A (ja) * 1985-05-14 1986-11-19 Sumitomo Light Metal Ind Ltd 成形性の優れたアルミニウム合金の硬質圧延板の製造方法

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US3486947A (en) * 1967-06-21 1969-12-30 Olin Mathieson Enhanced structural uniformity of aluminum based alloys by thermal treatments

Cited By (40)

* Cited by examiner, † Cited by third party
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US3930895A (en) * 1974-04-24 1976-01-06 Amax Aluminum Company, Inc. Special magnesium-manganese aluminum alloy
US4035201A (en) * 1975-06-30 1977-07-12 Aluminum Company Of America Method of making a container including an aluminum panel having a portion removable by tearing
DE2901020A1 (de) * 1978-08-04 1980-02-14 Alusuisse Verfahren zur herstellung eines bandes aus einer aluminiumlegierung fuer dosen und deckel
US4260419A (en) * 1978-08-04 1981-04-07 Coors Container Company Aluminum alloy composition for the manufacture of container components from scrap aluminum
US4269632A (en) * 1978-08-04 1981-05-26 Coors Container Company Fabrication of aluminum alloy sheet from scrap aluminum for container components
US4282044A (en) * 1978-08-04 1981-08-04 Coors Container Company Method of recycling aluminum scrap into sheet material for aluminum containers
EP0028059A1 (en) * 1979-08-30 1981-05-06 Alcan Research And Development Limited Cold-rolled aluminium alloy sheet product
DE3102759A1 (de) * 1980-01-28 1982-04-22 Kobe Steel, Ltd., Kobe, Hyogo Verfahren zur herstellung von legierungssubstraten auf al-basis fuer magnetische aufzeichnungsmaterialien und rohling fuer die herstellung eines solchen substrats
US4318755A (en) * 1980-12-01 1982-03-09 Alcan Research And Development Limited Aluminum alloy can stock and method of making same
EP0057959A1 (de) * 1981-02-06 1982-08-18 Vereinigte Deutsche Metallwerke Ag Aluminium-Knetlegierung
US4431463A (en) * 1981-02-06 1984-02-14 Vereinigte Deutsche Metallwerke Ag Alloy and process for manufacturing rolled strip from an aluminum alloy especially for use in the manufacture of two-piece cans
EP0121620A1 (en) * 1983-04-11 1984-10-17 Kabushiki Kaisha Kobe Seiko Sho Bake-hardenable aluminium alloy sheets and process for manufacturing same
US4707195A (en) * 1984-03-05 1987-11-17 Sumitomo Light Metal Industries, Ltd. Aluminum alloy sheet for containers excellent in corrosion resistance and method of producing same
US4976790A (en) * 1989-02-24 1990-12-11 Golden Aluminum Company Process for preparing low earing aluminum alloy strip
US5104465A (en) * 1989-02-24 1992-04-14 Golden Aluminum Company Aluminum alloy sheet stock
US5106429A (en) * 1989-02-24 1992-04-21 Golden Aluminum Company Process of fabrication of aluminum sheet
US5110545A (en) * 1989-02-24 1992-05-05 Golden Aluminum Company Aluminum alloy composition
EP0594509A1 (en) * 1992-10-23 1994-04-27 The Furukawa Electric Co., Ltd. Process for manufacturing Al-Mg alloy sheets for press forming
US6325872B1 (en) 1995-03-09 2001-12-04 Nichols Aluminum-Golden, Inc. Method for making body stock
US5993573A (en) * 1997-06-04 1999-11-30 Golden Aluminum Company Continuously annealed aluminum alloys and process for making same
US5985058A (en) * 1997-06-04 1999-11-16 Golden Aluminum Company Heat treatment process for aluminum alloys
US6290785B1 (en) 1997-06-04 2001-09-18 Golden Aluminum Company Heat treatable aluminum alloys having low earing
US5976279A (en) * 1997-06-04 1999-11-02 Golden Aluminum Company For heat treatable aluminum alloys and treatment process for making same
US6579387B1 (en) 1997-06-04 2003-06-17 Nichols Aluminum - Golden, Inc. Continuous casting process for producing aluminum alloys having low earing
US20030173003A1 (en) * 1997-07-11 2003-09-18 Golden Aluminum Company Continuous casting process for producing aluminum alloys having low earing
EP1129228A1 (en) * 1998-09-21 2001-09-05 Gibbs Die Casting Aluminum Corporation Aluminum die cast alloy having high manganese content
EP1129228A4 (en) * 1998-09-21 2002-07-31 Gibbs Die Casting Aluminum HIGH MAGNESIUM ALUMINUM DIE CASTING ALLOY
US20040007295A1 (en) * 2002-02-08 2004-01-15 Lorentzen Leland R. Method of manufacturing aluminum alloy sheet
US9194028B2 (en) 2010-09-08 2015-11-24 Alcoa Inc. 2xxx aluminum alloys, and methods for producing the same
US8999079B2 (en) 2010-09-08 2015-04-07 Alcoa, Inc. 6xxx aluminum alloys, and methods for producing the same
US9249484B2 (en) 2010-09-08 2016-02-02 Alcoa Inc. 7XXX aluminum alloys, and methods for producing the same
US9359660B2 (en) 2010-09-08 2016-06-07 Alcoa Inc. 6XXX aluminum alloys, and methods for producing the same
WO2013103957A3 (en) * 2012-01-05 2015-06-18 Golden Aluminum Company Used beverage container aluminum composition and method
US9796502B2 (en) 2012-01-05 2017-10-24 Golden Aluminum, Inc. Used beverage container aluminum composition and method
US10112737B2 (en) 2012-01-05 2018-10-30 Golden Aluminum, Inc. Method for the manufacture of an aluminum sheet product from used beverage containers
US9926620B2 (en) 2012-03-07 2018-03-27 Arconic Inc. 2xxx aluminum alloys, and methods for producing the same
EP2941491A4 (en) * 2013-01-07 2016-10-05 Golden Aluminum Inc ALUMINUM COMPOSITION FORMED FROM USED BEVERAGE CONTAINERS AND CORRESPONDING METHOD
US9587298B2 (en) 2013-02-19 2017-03-07 Arconic Inc. Heat treatable aluminum alloys having magnesium and zinc and methods for producing the same
US9657375B2 (en) 2013-06-10 2017-05-23 Golden Aluminum, Inc. Used beverage container aluminum composition and method
US10087507B2 (en) 2013-06-10 2018-10-02 Golden Aluminum, Inc. Beverage container

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Publication number Publication date
DE2342253A1 (de) 1974-04-04
JPS619180B2 (sv) 1986-03-20
IT996177B (it) 1975-12-10
JPS5615462B2 (sv) 1981-04-10
SE397965B (sv) 1977-11-28
FR2200367A1 (sv) 1974-04-19
CA991062A (en) 1976-06-15
SE7703005L (sv) 1977-03-16
SE433931B (sv) 1984-06-25
JPS5391884A (en) 1978-08-12
DE2342253C2 (de) 1986-05-22
JPS4970810A (sv) 1974-07-09
FR2200367B1 (sv) 1979-04-06

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