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Alumina vs. PC

Alumina and PC belong to fundamentally different material chemistries. Alumina is a ceramic material, while PC is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 7 material properties with values for both materials. Properties with values for just one material (26, 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 alumina and the bottom bar is PC.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.4 to 4.1
1.2 to 1.4
Flexural Strength, MPa 260 to 430
92 to 160
Specific Heat Capacity, J/kg-K 870 to 940
1000 to 1200
Strength to Weight: Axial, points 14 to 23
15 to 30
Strength to Weight: Bending, points 19 to 28
30 to 45
Tensile Strength: Ultimate (UTS), MPa 210 to 290
66 to 160
Thermal Expansion, µm/m-K 6.7 to 8.2
10 to 69