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PFA vs. PPE

Both PFA and PPE 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 PFA and the bottom bar is PPE.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 50
120
Maximum Temperature: Mechanical, °C 260
90
Melting Onset (Solidus), °C 300
260
Specific Heat Capacity, J/kg-K 1000
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 2.6
2.7
Dielectric Strength (Breakdown Potential), kV/mm 22
19
Electrical Resistivity Order of Magnitude, 10x Ω-m 16
13

Otherwise Unclassified Properties

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

Common Calculations

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