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Zamak 3 vs. C-820 Magnesia Ceramic

Zamak 3 and C-820 magnesia ceramic belong to fundamentally different material chemistries. Zamak 3 is a metal, while C-820 magnesia ceramic is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 8 material properties with values for both materials. Properties with values for just one material (32, 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 3 and the bottom bar is C-820 magnesia ceramic.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 6.4
2.7
Elastic (Young's, Tensile) Modulus, GPa 86
100
Specific Heat Capacity, J/kg-K 410
950
Stiffness to Weight: Axial, points 7.5
21
Stiffness to Weight: Bending, points 23
58
Thermal Conductivity, W/m-K 110
8.0
Thermal Diffusivity, mm2/s 43
3.1
Thermal Expansion, µm/m-K 27
11