Metal treatment – Stock – Copper base
Patent
1984-07-16
1986-05-20
O'Keefe, Veronica
Metal treatment
Stock
Copper base
148436, 148 115C, 420473, 420479, 420486, 420487, C22C 906
Patent
active
045899380
ABSTRACT:
Novel gold colored copper alloy compositions of single phase crystal structure possessing a combination of good cold and hot workability, excellent ductility and excellent corrosion, pitting, and tarnishing resistance. The compositions contain between about 0.5 and 4 weight percent nickel, between about 0.5 and 3.8 weight percent aluminum, and up to about 1.3 weight percent iron with the balance being copper. Additions of up to 0.5 weight percent, of manganese, silicon, zinc, tin lead, individually or any combination thereof, also contribute to or maintain the improved properties of the present invention. Other aspects of the invention relate to a method for imparting the above-described properties to a copper alloy, the non-tarnishing pitting resistant, gold colored sheets strip, wire, and like products made from such compositions, and an articles suitable for use as architectural members, jewelry, electrical connectors or heat exchanger/condenser tubing stock.
REFERENCES:
patent: 1916602 (1933-07-01), Braddock
patent: 2031315 (1936-02-01), Jennison
patent: 2031316 (1936-02-01), Jennison
patent: 2061897 (1936-11-01), Crampton
patent: 2798826 (1957-08-01), Klement
patent: 3725056 (1973-04-01), Ingerson
patent: 4401488 (1983-08-01), Prinz et al.
patent: 4402906 (1983-09-01), Ueda et al.
LL-C1 Interim Data Sheet, Kennecott Copper Corp.
Data Sheet for Alloy 644, Anaconda American Brass.
Metals Handbook, 8th ed. vol. 8, pp. 388-389 (1973).
O'Keefe Veronica
Revere Copper and Brass Incorporated
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