PET vs. PPO
Both PET and PPO are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is PET and the bottom bar is PPO.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 2.5 to 70 | |
| 3.5 to 28 |
| Flexural Modulus, GPa | 8.3 to 14 | |
| 2.5 to 8.6 |
| Impact Strength: Notched Izod, J/m | 43 to 85 | |
| 80 to 270 |
| Tensile Strength: Ultimate (UTS), MPa | 60 to 140 | |
| 63 to 140 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 80 | |
| 100 to 110 |
| Specific Heat Capacity, J/kg-K | 1000 to 1150 | |
| 1020 to 1250 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 3.7 | |
| 2.7 to 3.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.4 to 1.6 | |
| 1.1 to 1.4 |
| Limiting Oxygen Index (LOI), % | 21 | |
| 32 |
Common Calculations
| Strength to Weight: Axial, points | 12 to 27 | |
| 16 to 27 |
| Strength to Weight: Bending, points | 25 to 41 | |
| 33 to 42 |