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PPSU vs. PPO

Both PPSU and PPO are thermoplastics. There are 18 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 PPSU and the bottom bar is PPO.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 26
3.5 to 28
Flexural Modulus, GPa 4.7
2.5 to 8.6
Flexural Strength, MPa 130
92 to 140
Impact Strength: Notched Izod, J/m 80
80 to 270
Tensile Strength: Ultimate (UTS), MPa 95
63 to 140

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 210
120 to 140
Maximum Temperature: Mechanical, °C 160
100 to 110
Specific Heat Capacity, J/kg-K 970
1020 to 1250
Thermal Expansion, µm/m-K 45
25 to 60

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.8
2.7 to 3.2
Dielectric Strength (Breakdown Potential), kV/mm 16
19 to 21
Electrical Dissipation At 1 Hz 0.0020
0.0010 to 0.0020
Electrical Resistivity Order of Magnitude, 10x Ω-m 14
15

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.1 to 1.4
Limiting Oxygen Index (LOI), % 38
32
Water Absorption After 24 Hours, % 0.44
0.060 to 0.070

Common Calculations

Strength to Weight: Axial, points 19
16 to 27
Strength to Weight: Bending, points 33
33 to 42