MakeItFrom.com
Menu (ESC)

FEP vs. PPO

Both FEP and PPO are thermoplastics. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is FEP and the bottom bar is PPO.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 300
3.5 to 28
Flexural Modulus, GPa 0.6
2.5 to 8.6
Flexural Strength, MPa 24
92 to 140
Tensile Strength: Ultimate (UTS), MPa 20
63 to 140

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 50
120 to 140
Maximum Temperature: Mechanical, °C 200
100 to 110
Specific Heat Capacity, J/kg-K 1170
1020 to 1250
Thermal Expansion, µm/m-K 95
25 to 60

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 1.9
2.7 to 3.2
Dielectric Strength (Breakdown Potential), kV/mm 22
19 to 21
Electrical Dissipation At 1 Hz 0.00026
0.0010 to 0.0020
Electrical Resistivity Order of Magnitude, 10x Ω-m 16
15

Otherwise Unclassified Properties

Density, g/cm3 2.1
1.1 to 1.4
Limiting Oxygen Index (LOI), % 80
32
Water Absorption After 24 Hours, % 0.010
0.060 to 0.070

Common Calculations

Strength to Weight: Axial, points 2.6
16 to 27
Strength to Weight: Bending, points 7.6
33 to 42