Zamak 3 is usually the first choice when considering a zinc die casting in North America. It has an excellent combination of physcial and mechanical properties, superb castability and long-term dimensional stability. Nearly 70% of all zinc die castings are made from Zamak 3 in North America. It is therefore the most widely available alloy from die casting sources. Zamak 3 also offers excellent finishing characteristics for plating, painting and chromate treatments. It is the "Standard" by which other zinc alloys are rated in terms of die casting.
Typical Mechanical Properties (Die Cast)
| UTS: ksi (MPa) | Yield Strength: ksi (MPa) | Elongation: % | Hardness: Brinell | Modulus of Elasticity: psi x 10^6 |
| 41 (283) | 32 (221) | 10 | 82 | 12.4 |
Typical Physical Properties
| Density: lb/in^3 (g/cc) | Melt Range: deg F (deg C) | Electrical Conduct: %IACS | Specific Heat: BTU/lb/deg F | Die Shrinkage: in/in |
| 0.240 (6.6) | 718-728 (381-387) | 27 | 0.10 | 0.007 |
Chemical Analysis
| | Al | Mg | Cu | Fe | Pb | Cd | Sn | Ni | Zn |
| Ingot (ASTM B240) | 3.9-4.3 | .03-.06 | .10 max | 0.035 max | 0.0040 max | .0030 max | .0015 max | - | balance |
| Die Cast (ASTM B86) | 3.7-4.3 | .02-.06 | .1 max | .05 max | .005 max | .004 max | .002 max | - | balance |
Recommended Downloads
For additional properties of Zamak 3 and other zinc die casting alloys, please visit our technical library.
