Zamak 3
Zamak 3 (ASTM AG40A), or Zinc Alloy 3, is the most widely used zinc alloy in North America and is usually the first choice when considering zinc for die casting for a number of reasons.
- Excellent balance of desirable physical and mechanical properties
- Superb castability and long-term dimensional stability
- Excellent finishing characteristics for plating, painting, and chromate treatments
- Excellent damping capacity and vibration attenuation in comparison to aluminum die cast alloys
When it comes to die casting, Zamak 3 is the standard by which other zinc alloys are rated.
Mechanical Properties
Physical Properties
Composition
| Zinc Casting Metals | |
|---|---|
| % | Zamak 3 |
| Aluminum | 3.5-4.3 |
| Copper | 0.25 |
| Magnesium | 0.02-0.05 |
| Iron (max) | 0.1 |
| Lead (max) | 0.005 |
| Cadmium (max) | 0.004 |
| Tin (max) | 0.003 |
| Nickel (max) | |
| Zinc | Bal. |
| Manganese | |
| Silicon | |
| Other-Metallic | |
| RoHS Compliant | ✓ |
