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Phenolic vs. PPE

Phenolic belongs to the thermoset plastics classification, while PPE belongs to the thermoplastics. There are 19 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 3.8
2.3
Elongation at Break, % 2.0
30
Tensile Strength: Ultimate (UTS), MPa 48
55

Thermal Properties

Glass Transition Temperature, °C 170
85
Maximum Temperature: Autoignition, °C 430
430
Maximum Temperature: Mechanical, °C 150
90
Specific Heat Capacity, J/kg-K 1400
1200
Thermal Conductivity, W/m-K 0.25
0.22
Thermal Expansion, µm/m-K 120
90

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 7.5
2.7
Dielectric Strength (Breakdown Potential), kV/mm 46
19
Electrical Resistivity Order of Magnitude, 10x Ω-m 11
13

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.1

Common Calculations

Stiffness to Weight: Axial, points 1.6
1.2
Stiffness to Weight: Bending, points 40
42
Strength to Weight: Axial, points 10
14
Strength to Weight: Bending, points 23
30
Thermal Diffusivity, mm2/s 0.14
0.17
Thermal Shock Resistance, points 7.5
19