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PPS vs. PEI

Both PPS and PEI are thermoplastics. There are 14 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 95 to 160
140 to 180
Elongation at Break, % 2.5 to 11
3.0 to 34
Flexural Modulus, GPa 13 to 17
3.4 to 5.9
Flexural Strength, MPa 120 to 190
140 to 210
Impact Strength: Notched Izod, J/m 21 to 80
55 to 110
Tensile Strength: Ultimate (UTS), MPa 75 to 190
110 to 160

Thermal Properties

Glass Transition Temperature, °C 190 to 290
210
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 130 to 260
200 to 210
Specific Heat Capacity, J/kg-K 910 to 1000
1050 to 1220
Thermal Expansion, µm/m-K 20 to 45
20 to 53

Otherwise Unclassified Properties

Density, g/cm3 1.3 to 1.7
1.3 to 1.5
Water Absorption At Saturation, % 0.060 to 0.1
0.9 to 1.3

Common Calculations

Strength to Weight: Axial, points 16 to 37
24 to 30
Strength to Weight: Bending, points 30 to 52
40 to 44