All types of gold and gold alloy electroplates are used for many different applications by many different industries; however, there are eight general classes that may be listed that include much of present -day gold plating: Class A-Decorative 24 K gold flash (2-4 millionths of an in.), rack and barrel. Class B-Decorative gold alloy (2-4 millionths of an in.), rack and barrel. Class C-Decorative gold alloy, heavy (20-over 400 millionths of an in.), rack. These Deposits may be either C-1 karat color or C-2 karat assay.
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