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PPE vs. PCTFE

Both PPE and PCTFE are thermoplastics. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.3
1.4
Elongation at Break, % 30
150
Flexural Strength, MPa 75
59
Tensile Strength: Ultimate (UTS), MPa 55
36

Thermal Properties

Glass Transition Temperature, °C 85
100
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 120
110
Maximum Temperature: Autoignition, °C 430
580
Maximum Temperature: Mechanical, °C 90
150
Melting Onset (Solidus), °C 260
220
Specific Heat Capacity, J/kg-K 1200
920
Thermal Conductivity, W/m-K 0.22
0.21
Thermal Expansion, µm/m-K 90
130

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 19
21
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
16

Otherwise Unclassified Properties

Density, g/cm3 1.1
2.1
Water Absorption After 24 Hours, % 0.23
0.0094

Common Calculations

Stiffness to Weight: Axial, points 1.2
0.37
Stiffness to Weight: Bending, points 42
17
Strength to Weight: Axial, points 14
4.6
Strength to Weight: Bending, points 30
11
Thermal Diffusivity, mm2/s 0.17
0.11
Thermal Shock Resistance, points 19
14