ZA 8
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
Mechanical Properties
Physical Properties
Composition
| Zinc Casting Metals | |
|---|---|
| % | ZA 8 |
| Aluminum | 8.0-8.8 |
| Copper | 0.8-1.3 |
| Magnesium | 0.015-0.03 |
| Iron (max) | 0.075 |
| Lead (max) | 0.006 |
| Cadmium (max) | 0.006 |
| Tin (max) | 0.003 |
| Nickel (max) | |
| Zinc | Bal. |
| Manganese | |
| Silicon | |
| Other-Metallic | |
| RoHS Compliant | ✓ |
