ZA-8, or zinc aluminum alloy, contains significantly more aluminum than the Zamak group of alloys. ZA-8 contains approximately 8.4% aluminum and is the only ZA alloy that can be hot-chamber die cast, an important consideration when selecting a material for a component.
- ZA-8 has excellent finishing and plating characteristics and was originally developed as a permanent mold alloy
- It is ideal for decorative applications
- Although it does not have as good casting characteristics as the other zinc alloys, it offers significantly improved strength, hardness, and creep properties
- In terms of mechanical performance, ZA 8 has the highest creep strength of any zinc alloy and the highest strength of any hot-chamber die cast zinc alloy