PEEK vs. PPSU
Both PEEK and PPSU are thermoplastics. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is PEEK and the bottom bar is PPSU.
Metric UnitsUS Customary Units
Mechanical Properties
Compressive (Crushing) Strength, MPa | 120 to 300 | |
140 |
Elastic (Young's, Tensile) Modulus, GPa | 4.0 to 24 | |
3.6 |
Elongation at Break, % | 1.6 to 43 | |
26 |
Flexural Modulus, GPa | 3.8 to 19 | |
4.7 |
Flexural Strength, MPa | 150 to 330 | |
130 |
Impact Strength: Notched Izod, J/m | 78 to 120 | |
80 |
Rockwell R Hardness | 120 | |
130 |
Tensile Strength: Ultimate (UTS), MPa | 97 to 200 | |
95 |
Thermal Properties
Glass Transition Temperature, °C | 240 | |
220 |
Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 160 to 300 | |
210 |
Maximum Temperature: Autoignition, °C | 600 | |
580 |
Maximum Temperature: Decomposition, °C | 570 | |
560 |
Maximum Temperature: Mechanical, °C | 330 | |
160 |
Specific Heat Capacity, J/kg-K | 1390 to 1700 | |
970 |
Thermal Conductivity, W/m-K | 0.25 to 0.93 | |
0.24 |
Thermal Expansion, µm/m-K | 15 to 52 | |
45 |
Electrical Properties
Electrical Resistivity Order of Magnitude, 10x Ω-m | 3.0 to 14 | |
14 |
Otherwise Unclassified Properties
Density, g/cm3 | 1.3 to 1.5 | |
1.4 |
Limiting Oxygen Index (LOI), % | 38 | |
38 |
Water Absorption After 24 Hours, % | 0.060 to 0.3 | |
0.44 |
Common Calculations
Stiffness to Weight: Axial, points | 1.5 to 10 | |
1.4 |
Stiffness to Weight: Bending, points | 36 to 73 | |
36 |
Strength to Weight: Axial, points | 20 to 41 | |
19 |
Strength to Weight: Bending, points | 36 to 55 | |
33 |
Thermal Diffusivity, mm2/s | 0.1 to 0.51 | |
0.17 |
Thermal Shock Resistance, points | 34 to 57 | |
42 |