PPSU vs. PPA
Both PPSU and PPA are thermoplastics. There are 17 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.
For each property being compared, the top bar is PPSU and the bottom bar is PPA.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 3.6 | |
2.1 to 2.2 |
Elongation at Break, % | 26 | |
30 |
Flexural Modulus, GPa | 4.7 | |
2.3 to 2.4 |
Flexural Strength, MPa | 130 | |
95 to 110 |
Tensile Strength: Ultimate (UTS), MPa | 95 | |
57 to 69 |
Thermal Properties
Glass Transition Temperature, °C | 220 | |
92 to 130 |
Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 210 | |
120 |
Maximum Temperature: Decomposition, °C | 560 | |
450 |
Specific Heat Capacity, J/kg-K | 970 | |
1400 |
Thermal Conductivity, W/m-K | 0.24 | |
0.15 |
Otherwise Unclassified Properties
Density, g/cm3 | 1.4 | |
1.1 |
Water Absorption After 24 Hours, % | 0.44 | |
0.7 |
Common Calculations
Stiffness to Weight: Axial, points | 1.4 | |
1.0 to 1.1 |
Stiffness to Weight: Bending, points | 36 | |
38 |
Strength to Weight: Axial, points | 19 | |
14 to 17 |
Strength to Weight: Bending, points | 33 | |
29 to 33 |
Thermal Diffusivity, mm2/s | 0.17 | |
0.095 |