Cooper-Zinc-Manganese Alloys with Silvery-White Finish for Coinage and Token Applications

摘要

Alloys of copper and manganese and copper, manganese and zinc can be used for the production of coins, such as the U.S. five cent piece or "nickel." With appropriate platings, these alloys can match the electromagnetic signatures or electrical conductivity of currently circulated coins. This is important as modern vending machines include sensors which measure the conductivity of coins to ensure they are genuine.