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PPE vs. PFA

Both PPE and PFA are thermoplastics. There are 16 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 PFA.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 30
300
Tensile Strength: Ultimate (UTS), MPa 55
30

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 120
50
Maximum Temperature: Mechanical, °C 90
260
Melting Onset (Solidus), °C 260
300
Specific Heat Capacity, J/kg-K 1200
1000
Thermal Conductivity, W/m-K 0.22
0.25
Thermal Expansion, µm/m-K 90
120

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 2.7
2.6
Dielectric Strength (Breakdown Potential), kV/mm 19
22
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
16

Otherwise Unclassified Properties

Density, g/cm3 1.1
2.2
Water Absorption After 24 Hours, % 0.23
0

Common Calculations

Strength to Weight: Axial, points 14
3.9
Strength to Weight: Bending, points 30
10
Thermal Diffusivity, mm2/s 0.17
0.12