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PS vs. PPS

Both PS and PPS are thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.0
1.3 to 1.7
Elongation at Break, % 1.8 to 40
2.5 to 11
Flexural Strength, MPa 62 to 80
120 to 190
Glass Transition Temperature, °C 100
190 to 290
Impact Strength: Notched Izod, J/m 19 to 45
21 to 80
Specific Heat Capacity, J/kg-K 1250 to 1400
910 to 1000
Strength to Weight: Axial, points 8.5 to 12
16 to 37
Strength to Weight: Bending, points 22 to 26
30 to 52
Tensile Strength: Ultimate (UTS), MPa 32 to 44
75 to 190
Thermal Expansion, µm/m-K 80 to 98
20 to 45