Due to its combination of strength, ductility, and fluidity, zinc die casting alloys are popular throughout the world. 1% copper added to the alloy improves the mechanical properties of the alloy.

Zamak 5 castings are much stronger and harder than Zamak 3. However, these improvements are offset by a reduction in ductility, which can affect ductility during secondary bending, riveting, twisting, or creasing operations. Zamak 5 contains 1% copper, which brings about these property changes. The zinc die casting alloy is widely cast in Europe and exhibits excellent casting characteristics as well as improved creep performance over zamak 3. Due to the widespread availability of zamak 3, material specifiers often strengthen components with design modifications instead of using zamak 5. However, when a higher standard of tensile performance is required, Zamak alloy 5 castings are recommended. This alloy is easily plated, finished, and machined, comparable to Zamak 3 alloy.