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PPS vs. Thermoset PI

PPS belongs to the thermoplastics classification, while thermoset PI belongs to the thermoset plastics. There are 14 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is PPS and the bottom bar is thermoset PI.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 95 to 160
120 to 210
Elongation at Break, % 2.5 to 11
2.0 to 5.9
Flexural Modulus, GPa 13 to 17
3.1 to 4.8
Flexural Strength, MPa 120 to 190
60 to 100
Impact Strength: Notched Izod, J/m 21 to 80
21 to 43
Tensile Strength: Ultimate (UTS), MPa 75 to 190
37 to 81

Thermal Properties

Glass Transition Temperature, °C 190 to 290
360
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 130 to 260
370
Specific Heat Capacity, J/kg-K 910 to 1000
1130
Thermal Expansion, µm/m-K 20 to 45
38 to 54

Otherwise Unclassified Properties

Density, g/cm3 1.3 to 1.7
1.4 to 1.6
Water Absorption At Saturation, % 0.060 to 0.1
3.6

Common Calculations

Strength to Weight: Axial, points 16 to 37
6.5 to 16
Strength to Weight: Bending, points 30 to 52
16 to 30