Aluminum Company of America

Alcoa Inc.

Thomas J Klemp

Gerald D Scott

Charles W Bartges

James A Brock

John A Dickson, Jr

David W Hohman

David A Lukasak

M Elise Hyland

Colleen Spillard

Richard A Schuster

Richard A Jeniski, Jr

Matthew J Allyn

Arvid H Sorensen

Robert L Clottu

Darwin O Collins

A method of press quenching a 6020 aluminum alloy comprising the steps of providing an ingot or billet of 6020 aluminum alloy consisting essentially of about 0.5 to about 0.6% silicon, about 0.7 to about 0.8% magnesium, about 0.55 to about 0.65% copper, about 0.35 to about 0.45% iron, about 0.01 to about 0.04% manganese, about 1.05 to about 1.15% tin, and about 0.04 to about 0.06% chromium; homogenizing the billet, cooling the billet, reheating the billet, extruding the billet, quenching the extrusion, and artificially aging the extrusion. The alloy has enhanced productivity, strength, and machinability and can be used as a direct replacement for lead containing alloy 6262 T-6.

Method of press quenching aluminum alloy 6020

This invention relates to an aluminum alloy with B-rated or better machineability, said alloy being suitable for using as brazing in the Nocolock&reg; process. The alloy consists essentially of: about 0.5-0.8 wt. % silicon; about 0.4-0.6 wt. % magnesium; about 0.4-0.72 wt. % tin; up to about 0.5 wt. % iron; up to about 0.3 wt. % copper; up to about 0.35 wt. % manganese; up to about 0.15 wt. % chromium; and up to about 0.2 wt. % zinc; the balance aluminum and incidental elements and impurities. This product is preferentially processed into one or more of the following tempers: T1, T5, T6, T651, T6510, T6511, T8, T851, and T9.

Brazeable 6XXX alloy with B-rated or better machinability

An A-rated, aluminum alloy suitable for machining, said alloy consisting essentially of: about 4-5.75 wt. % copper, about 0.2-0.9 wt. % bismuth, about 0.12-1.0 wt. % tin, the ratio of bismuth to tin ranging from about 0.8:1 to 5:1, up to about 0.7 wt. % iron, up to about 0.4 wt. % silicon, up to about 0.3 wt. % zinc, the balance aluminum, incidental elements and impurities. On a preferred basis, this alloy contains about 4.4-5.0 wt. % copper, about 0.4-0.75 wt. % bismuth, about 0.2-0.5 wt. % tin, the ratio of bismuth to tin ranging from about 1:1 to 3:1, about 0.2 wt. % or less iron and about 0.2 wt. % or less silicon. The alloy is substantially lead-free, cadmium-free and thallium-free. There is further disclosed an improved method for making screw machine stock or wire, rod and bar product from this alloy by casting, preheating, extruding, solution heat treating, cold finishing and aging the same.

2XXX series aluminum alloy

Methods for making an aluminum drive shaft for automobiles or trucks or other drive shaft applications from aluminum alloy tube and methods for making said tube including using an aluminum alloy containing about 0.5 to 1.3% magnesium, about 0.4 to 1.2% silicon, and about 0.6 to 1.2% copper and preferred practices for making the tube. The preferred practices include extrusion temperature and other aspects of extrusion, along with cold drawing. One preferred practice includes reducing tube diameter and increasing wall thickness at one or both ends of the drive shaft tube shortly after solution heating and quenching and applies to various 6000 Series type aluminum alloys.

Drive shafts for vehicles and other applications and method for

An A-rated aluminum alloy suitable for machining, said alloy consisting essentially of: about 0.15-1.0 wt. % copper, about 1.01-1.5 wt. % tin, about 0.65-1.35 wt. % magnesium, about 0.4-1.1 wt. % silicon, about 0.00 2-0.35 wt. % manganese, up to about 0.5 wt. % iron, up to about 0.15 wt. % chromium and up to about 0.15 wt. % titanium, the remainder substantially aluminum. On a preferred basis, this alloy contains about 0.51-0.75 wt. % copper, about 1.1-1.3 wt. % tin, about 0.7-0.9 wt. % magnesium and about 0.45-0.75 wt. % silicon. The alloy is substantially free of lead, bismuth, nickel, zirconium and cadmium. There is further disclosed an improved method for making screw machine stock or wire, rod and bar product from this alloy by casting, preheating, extruding, solution heat treating, cold finishing and thermally processing the aforementioned alloy composition.

Substantially lead-free 6XXX aluminum alloy

Methods for making an aluminum alloy bicycle frame and for making tubes for such frames including use of an aluminum alloy containing about 0.5 to 1.3% magnesium, about 0.4 to 1.2% silicon, and about 0.6 to 1.2% copper and preferred practices for making extruded and drawn tubing of the alloy and making bicycle frames from the tubing. The preferred practices include extrusion temperature control and other aspects of extrusion and drawing.

Bicycle frames and aluminum alloy tubing therefor and methods for their

An aluminum alloy containing about 0.5 to 1.3% magnesium, about 0.4 to 1.2% silicon, about 0.6 to 1.2% copper, about 0.1 to 1% manganese, the balance substantially being aluminum along with impurities and incidental elements, is made into wrought wire, rod, bar or tube products by extrusion and cold working, preferably drawing, operations. The method includes extrusion within about 300.degree. or 400.degree. up to about 650.degree. or 700.degree. F. and even possibly up to 750.degree. or 800.degree. F. on a less preferred basis. Following extrusion, the product may be cold drawn either before or after, or both before and after, solution heat treatment and quenching. Rapid quenching is preferred. The product can then be artificially aged, for instance by heating to 375.degree. F. The resulting product has a fine grain size and consistent and good properties so as to be useful in a number of applications.

Aluminum alloy extruded and cold worked products having fine grain

A worked rod extrusion product for fabricating into products having high wear resistance surfaces, the product comprised of 11 to 13.5 wt. % Si, 0.5 to 1.45 wt % Cu, 0.8 to 3 wt. % Mg, 0.5 to 2.95 wt. % Ni, max 1 wt. % Fe, max 0.1 wt. % Cr, max 0.25 wt. % Zn, the balance aluminum, incidental elements and impurities.

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Massena, NY, United States of America

Thomas J Klemp