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COC vs. PAI

Both COC and PAI are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is COC and the bottom bar is PAI.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 3.0
4.0 to 8.3
Elongation at Break, % 2.5
3.0 to 12
Tensile Strength: Ultimate (UTS), MPa 60
100 to 180

Thermal Properties

Thermal Expansion, µm/m-K 60
15 to 34

Otherwise Unclassified Properties

Density, g/cm3 1.0
1.4 to 1.6
Water Absorption After 24 Hours, % 0
0.3 to 0.4

Common Calculations

Stiffness to Weight: Axial, points 1.7
1.6 to 3.2
Stiffness to Weight: Bending, points 48
38 to 47
Strength to Weight: Axial, points 17
19 to 34
Strength to Weight: Bending, points 34
33 to 49
Thermal Shock Resistance, points 24
48 to 110