The composition of German silver is, Zinc(Zn)‌‌=‌ about ‌35% Copper(Cu)‌‌=‌ about ‌50% ‌ Nickel ‌(Ni)‌‌=‌ about ‌15% The composition of Brass is, Zinc(Zn)=‌ about ‌30% Copper(Cu)=‌ about ‌70% Iron, Fe, is not present in both of them.