White most likely = (Electro Plated Nickel Silver)
Properties and Composition of Nickel Silver - UNS C75700. Nickel silver, known also as German silver, nickel brass or alpacca, is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc. For example the alloy C75700 contains 63.5 to 66.5% of Cu, 11.0 to 13.0% of Ni, 0.05% Pb max, 0.25% Fe max, 0 ...
https://material-properties.org/what...00-definition/
Bookmarks