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
|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|
|Ingot (ASTM B240)||3.9-4.3||.03-.06||.10 max||0.35 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|
For additional properties of Zamak 3 and other zinc die casting alloys, please visit our technical library.