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PPE vs. CA

Both PPE and CA are thermoplastics. There are 18 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is PPE and the bottom bar is CA.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 30
25 to 30
Flexural Strength, MPa 75
40 to 55
Tensile Strength: Ultimate (UTS), MPa 55
30 to 37

Thermal Properties

Glass Transition Temperature, °C 85
230
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 120
65 to 75
Maximum Temperature: Autoignition, °C 430
400
Specific Heat Capacity, J/kg-K 1200
1500
Thermal Conductivity, W/m-K 0.22
0.25
Thermal Expansion, µm/m-K 90
14
Vicat Softening Temperature, °C 140
100 to 110

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 2.7
3.6
Dielectric Strength (Breakdown Potential), kV/mm 19
15
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
16

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.3
Water Absorption After 24 Hours, % 0.23
2.3

Common Calculations

Strength to Weight: Axial, points 14
6.4 to 7.9
Strength to Weight: Bending, points 30
17 to 19
Thermal Diffusivity, mm2/s 0.17
0.13