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PPSU vs. DAP

PPSU belongs to the thermoplastics classification, while DAP belongs to the thermoset plastics. There are 21 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 DAP.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 140
150
Elastic (Young's, Tensile) Modulus, GPa 3.6
13
Elongation at Break, % 26
31
Flexural Strength, MPa 130
62
Impact Strength: Notched Izod, J/m 80
14
Tensile Strength: Ultimate (UTS), MPa 95
28

Thermal Properties

Glass Transition Temperature, °C 220
150
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 210
160
Specific Heat Capacity, J/kg-K 970
1450
Thermal Conductivity, W/m-K 0.24
0.6
Thermal Expansion, µm/m-K 45
25

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.8
5.2
Dielectric Strength (Breakdown Potential), kV/mm 16
40
Electrical Resistivity Order of Magnitude, 10x Ω-m 14
13

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.7

Common Calculations

Stiffness to Weight: Axial, points 1.4
4.1
Stiffness to Weight: Bending, points 36
46
Strength to Weight: Axial, points 19
4.5
Strength to Weight: Bending, points 33
12
Thermal Diffusivity, mm2/s 0.17
0.24
Thermal Shock Resistance, points 42
6.3