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PSU vs. PPO

Both PSU and PPO are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 2.0 to 52
3.5 to 28
Flexural Modulus, GPa 2.7 to 14
2.5 to 8.6
Flexural Strength, MPa 110 to 200
92 to 140
Impact Strength: Notched Izod, J/m 59 to 100
80 to 270
Tensile Strength: Ultimate (UTS), MPa 70 to 140
63 to 140

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 180 to 200
120 to 140
Specific Heat Capacity, J/kg-K 910 to 1000
1020 to 1250
Thermal Expansion, µm/m-K 25 to 57
25 to 60

Otherwise Unclassified Properties

Density, g/cm3 1.2 to 1.6
1.1 to 1.4

Common Calculations

Strength to Weight: Axial, points 16 to 25
16 to 27
Strength to Weight: Bending, points 30 to 40
33 to 42