Metal treatment – Stock – Copper base
Patent
1982-04-22
1983-08-30
Skiff, Peter K.
Metal treatment
Stock
Copper base
420486, 428675, C22C 901, C22C 906
Patent
active
044014880
ABSTRACT:
An alloy useful as a coinage alloy, especially as a cladding for a coin comprising a core and a cladding is disclosed. The alloy consists essentially of 4 to 6% nickel, 4 to 6% aluminum, balance copper and inevitable impurities which are due to the manufacture. Also disclosed are coins made therefrom having a gold-like color.
REFERENCES:
patent: 1916602 (1933-07-01), Braddock
patent: 2031315 (1936-02-01), Jennison
patent: 4292377 (1981-09-01), Petersen et al.
patent: 4330599 (1982-05-01), Winter et al.
Heubner Ulrich
Prinz Bruno
Rockel Manfred B.
Rudolph Gunther
Zoebe Hugo
Skiff Peter K.
Vereinigte Deutsch Metallwerke AG
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