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CAP vs. PPSU

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

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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