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Epoxy vs. PPE

Epoxy belongs to the thermoset plastics classification, while PPE belongs to the thermoplastics. 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 epoxy and the bottom bar is PPE.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.1

Common Calculations

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