ZA 27
ZA-27, or zinc aluminum alloy, contains significantly more aluminum than the Zamak group of alloys. The number 27 represents the approximate percentage of aluminum.
- ZA-27 has the highest aluminum content, highest strength, highest melting point, and lowest density of the ZA group
- This zinc alloy exhibits excellent bearing properties, which allow bearings to be designed into the casting of some applications
- Its relatively high casting temperature requires the cold-chamber process
Mechanical Properties
Physical Properties
Composition
| Zinc | |
|---|---|
| % | ZA 27 |
| Aluminum | 25.0-28.0 |
| Copper | 2.0-2.5 |
| Magnesium | 0.01-0.02 |
| 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 | ✓ |
