Nickel silver, also known as German silver is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc. Nickel silver is named for its silvery appearance, but it contains no elemental silverunless plated.
The name “German silver” refers to its development by 19th-century German metalworkers in imitation of the Chinese alloy known as paktong (cupronickel) All modern, commercially important nickel silvers (such as those standardized under ASTM B122) contain significant amounts of zinc, and are sometimes considered a subset of brass.
Nickel brass is composed of 70% copper, 24.5% zinc and 5.5% nickel used to make coins & Medals