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PAS vs. PPSU

Both PAS and PPSU 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 PAS and the bottom bar is PPSU.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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