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FEP vs. PSU

Both FEP and PSU are thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (24, in this case) are not shown.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.1
1.2 to 1.6
Elongation at Break, % 300
2.0 to 52
Flexural Modulus, GPa 0.6
2.7 to 14
Flexural Strength, MPa 24
110 to 200
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 50
180 to 200
Specific Heat Capacity, J/kg-K 1170
910 to 1000
Strength to Weight: Axial, points 2.6
16 to 25
Strength to Weight: Bending, points 7.6
30 to 40
Tensile Strength: Ultimate (UTS), MPa 20
70 to 140
Thermal Expansion, µm/m-K 95
25 to 57