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PPSU vs. PAS

Both PPSU and PAS are thermoplastics. There are 22 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 PPSU and the bottom bar is PAS.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 3.6
2.7
Elongation at Break, % 26
40
Flexural Modulus, GPa 4.7
2.8
Flexural Strength, MPa 130
110
Impact Strength: Notched Izod, J/m 80
85
Rockwell M Hardness 84
85
Tensile Strength: Ultimate (UTS), MPa 95
83

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 210
200
Thermal Expansion, µm/m-K 45
49

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.8
3.5
Dielectric Constant (Relative Permittivity) At 1 MHz 3.4
3.5
Dielectric Strength (Breakdown Potential), kV/mm 16
15
Electrical Dissipation At 1 Hz 0.0020
0.0017
Electrical Resistivity Order of Magnitude, 10x Ω-m 14
15

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.4
Limiting Oxygen Index (LOI), % 38
33
Water Absorption After 24 Hours, % 0.44
0.4

Common Calculations

Stiffness to Weight: Axial, points 1.4
1.1
Stiffness to Weight: Bending, points 36
34
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 33
31
Thermal Shock Resistance, points 42
45