PEEK vs. PP Copolymer
Both PEEK and PP copolymer are thermoplastics. There are 14 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 PEEK and the bottom bar is PP copolymer.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 4.0 to 24 | |
| 0.9 to 1.1 |
| Elongation at Break, % | 1.6 to 43 | |
| 12 |
| Flexural Modulus, GPa | 3.8 to 19 | |
| 1.3 |
| Flexural Strength, MPa | 150 to 330 | |
| 31 |
| Impact Strength: Notched Izod, J/m | 78 to 120 | |
| 110 to 350 |
| Tensile Strength: Ultimate (UTS), MPa | 97 to 200 | |
| 23 to 33 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 160 to 300 | |
| 50 to 100 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 80 |
| Melting Onset (Solidus), °C | 340 | |
| 150 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 0.9 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 10 | |
| 0.56 to 0.68 |
| Stiffness to Weight: Bending, points | 36 to 73 | |
| 36 to 38 |
| Strength to Weight: Axial, points | 20 to 41 | |
| 7.1 to 10 |
| Strength to Weight: Bending, points | 36 to 55 | |
| 20 to 25 |