PEEK vs. PCL
Both PEEK and PCL are thermoplastics. There are 12 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 PCL.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 4.0 to 24 | |
| 1.2 |
| Elongation at Break, % | 1.6 to 43 | |
| 300 |
| Tensile Strength: Ultimate (UTS), MPa | 97 to 200 | |
| 10 |
Thermal Properties
| Glass Transition Temperature, °C | 240 | |
| -60 |
| Maximum Temperature: Decomposition, °C | 570 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 40 |
| Melting Onset (Solidus), °C | 340 | |
| 60 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.1 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 10 | |
| 0.61 |
| Stiffness to Weight: Bending, points | 36 to 73 | |
| 32 |
| Strength to Weight: Axial, points | 20 to 41 | |
| 2.5 |
| Strength to Weight: Bending, points | 36 to 55 | |
| 9.4 |