PEEK vs. PPO
Both PEEK and PPO are thermoplastics. There are 15 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 PEEK and the bottom bar is PPO.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 1.6 to 43 | |
| 3.5 to 28 |
| Flexural Modulus, GPa | 3.8 to 19 | |
| 2.5 to 8.6 |
| Flexural Strength, MPa | 150 to 330 | |
| 92 to 140 |
| Impact Strength: Notched Izod, J/m | 78 to 120 | |
| 80 to 270 |
| Tensile Strength: Ultimate (UTS), MPa | 97 to 200 | |
| 63 to 140 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 160 to 300 | |
| 120 to 140 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 100 to 110 |
| Specific Heat Capacity, J/kg-K | 1390 to 1700 | |
| 1020 to 1250 |
| Thermal Expansion, µm/m-K | 15 to 52 | |
| 25 to 60 |
Electrical Properties
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 3.0 to 14 | |
| 15 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.1 to 1.4 |
| Limiting Oxygen Index (LOI), % | 38 | |
| 32 |
| Water Absorption After 24 Hours, % | 0.060 to 0.3 | |
| 0.060 to 0.070 |
Common Calculations
| Strength to Weight: Axial, points | 20 to 41 | |
| 16 to 27 |
| Strength to Weight: Bending, points | 36 to 55 | |
| 33 to 42 |