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ETFE vs. PPE

Both ETFE and PPE are thermoplastics. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.5
2.3
Elongation at Break, % 230
30
Tensile Strength: Ultimate (UTS), MPa 46
55

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 50
120
Maximum Temperature: Autoignition, °C 540
430
Maximum Temperature: Mechanical, °C 160
90
Melting Onset (Solidus), °C 260
260
Specific Heat Capacity, J/kg-K 1000
1200
Thermal Conductivity, W/m-K 0.24
0.22
Thermal Expansion, µm/m-K 95
90

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 2.6
2.7
Dielectric Strength (Breakdown Potential), kV/mm 16
19
Electrical Resistivity Order of Magnitude, 10x Ω-m 15
13

Otherwise Unclassified Properties

Density, g/cm3 1.8
1.1
Water Absorption After 24 Hours, % 0.010
0.23

Common Calculations

Stiffness to Weight: Axial, points 0.48
1.2
Stiffness to Weight: Bending, points 22
42
Strength to Weight: Axial, points 7.3
14
Strength to Weight: Bending, points 16
30
Thermal Diffusivity, mm2/s 0.14
0.17
Thermal Shock Resistance, points 23
19