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PPSU vs. CAP

Both PPSU and CAP are thermoplastics. There are 18 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is PPSU and the bottom bar is CAP.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 26
35 to 50
Flexural Modulus, GPa 4.7
1.2 to 1.9
Flexural Strength, MPa 130
29 to 56
Tensile Strength: Ultimate (UTS), MPa 95
28 to 45

Thermal Properties

Glass Transition Temperature, °C 220
190
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 210
65 to 80
Heat Deflection Temperature At 455 kPa (66 psi), °C 220
75 to 90
Specific Heat Capacity, J/kg-K 970
1480
Thermal Conductivity, W/m-K 0.24
0.25
Thermal Expansion, µm/m-K 45
14

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 3.4
3.6
Dielectric Strength (Breakdown Potential), kV/mm 16
15
Electrical Resistivity Order of Magnitude, 10x Ω-m 14
16

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.2
Water Absorption After 24 Hours, % 0.44
1.4 to 1.7

Common Calculations

Strength to Weight: Axial, points 19
6.5 to 10
Strength to Weight: Bending, points 33
17 to 23
Thermal Diffusivity, mm2/s 0.17
0.14