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Alumina vs. COC

Alumina and COC belong to fundamentally different material chemistries. Alumina is a ceramic material, while COC is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (20, 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 COC.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.4 to 4.1
1.0
Elastic (Young's, Tensile) Modulus, GPa 220 to 370
3.0
Electrical Resistivity Order of Magnitude, 10x Ω-m 6.2 to 14
14
Stiffness to Weight: Axial, points 35 to 53
1.7
Stiffness to Weight: Bending, points 57 to 62
48
Strength to Weight: Axial, points 14 to 23
17
Strength to Weight: Bending, points 19 to 28
34
Tensile Strength: Ultimate (UTS), MPa 210 to 290
60
Thermal Expansion, µm/m-K 6.7 to 8.2
60
Thermal Shock Resistance, points 4.9 to 14
24