Aluminum-copper alloy

Details Aluminum-copper alloy Aluminum-copper alloy

1997-03-19

1998-09-08

Wyszomierski, George

Metal treatment

Stock

Age or precipitation hardened or strengthened

420530, 420531, 420554, C22C 2112

Patent

active

058039945

ABSTRACT:
An essentially lead-free aluminum alloy is provided for extruded screw machine stock. The alloy consists essentially of from about 4.5% to about 6% copper, a maximum of about 0.4% silicon, a maximum of about 0.7% iron, not more than about 0.3% zinc, from about 0.1% to about 1% bismuth, from about 0.2% to about 0.5% tin, balance aluminum and unavoidable impurities. The screw machine stock is prepared by extruding a homogenized billet to the desired shape, then the shape is subjected to a thermomechanical treatment involving at least one heat-treatment and cold working.

REFERENCES:
patent: 2026575 (1936-01-01), Kempf et al.
patent: 2026576 (1936-01-01), Kempf et al.
patent: 2076571 (1937-04-01), Kempf et al.
patent: 5122208 (1992-06-01), Alabi
patent: 5194102 (1993-03-01), Wyss
Article from vol. 31, No. 12--Jrl. Japan Inst Light Metals, Dec. 1981.
202438 84-560059, Tsuji, Y; Doi, Y, Japan Institute of Light Metals, 65th Conference, Tokyo, Japan, Nov. 1983.
Metals Handbook: Desk Edition; Boyer and Gall, editors; American Society for Metals, Metals Park, Ohio; 1985; pp. 6-8 to 6-11, 6-24, 6-25, 6-28, 6-30.

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