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Zamak 2 vs. DAP

Zamak 2 and DAP belong to fundamentally different material chemistries. Zamak 2 is a metal, while DAP is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 14 material properties with values for both materials. Properties with values for just one material (28, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is Zamak 2 and the bottom bar is DAP.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 640
150
Elastic (Young's, Tensile) Modulus, GPa 87
13
Elongation at Break, % 6.0
31
Tensile Strength: Ultimate (UTS), MPa 360
28

Thermal Properties

Specific Heat Capacity, J/kg-K 410
1450
Thermal Conductivity, W/m-K 110
0.6
Thermal Expansion, µm/m-K 28
25

Otherwise Unclassified Properties

Density, g/cm3 6.5
1.7

Common Calculations

Stiffness to Weight: Axial, points 7.5
4.1
Stiffness to Weight: Bending, points 23
46
Strength to Weight: Axial, points 15
4.5
Strength to Weight: Bending, points 17
12
Thermal Diffusivity, mm2/s 41
0.24
Thermal Shock Resistance, points 11
6.3