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PPE vs. Epoxy

PPE belongs to the thermoplastics classification, while epoxy belongs to the thermoset plastics. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.3
2.4
Elongation at Break, % 30
4.5
Tensile Strength: Ultimate (UTS), MPa 55
67

Thermal Properties

Glass Transition Temperature, °C 85
120
Maximum Temperature: Autoignition, °C 430
430
Maximum Temperature: Mechanical, °C 90
130
Specific Heat Capacity, J/kg-K 1200
1500
Thermal Conductivity, W/m-K 0.22
0.2
Thermal Expansion, µm/m-K 90
100

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 19
16
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
13

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.3

Common Calculations

Stiffness to Weight: Axial, points 1.2
1.0
Stiffness to Weight: Bending, points 42
34
Strength to Weight: Axial, points 14
14
Strength to Weight: Bending, points 30
28
Thermal Diffusivity, mm2/s 0.17
0.1
Thermal Shock Resistance, points 19
20