PEEK vs. UHMW-PE
Both PEEK and UHMW-PE are thermoplastics. There are 14 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.
For each property being compared, the top bar is PEEK and the bottom bar is UHMW-PE.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 4.0 to 24 | |
| 0.8 |
| Elongation at Break, % | 1.6 to 43 | |
| 400 |
| Tensile Strength: Ultimate (UTS), MPa | 97 to 200 | |
| 49 |
Thermal Properties
| Melting Onset (Solidus), °C | 340 | |
| 130 |
| Specific Heat Capacity, J/kg-K | 1390 to 1700 | |
| 1750 |
| Thermal Conductivity, W/m-K | 0.25 to 0.93 | |
| 0.41 |
| Thermal Expansion, µm/m-K | 15 to 52 | |
| 180 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 0.94 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 10 | |
| 0.47 |
| Stiffness to Weight: Bending, points | 36 to 73 | |
| 33 |
| Strength to Weight: Axial, points | 20 to 41 | |
| 14 |
| Strength to Weight: Bending, points | 36 to 55 | |
| 32 |
| Thermal Diffusivity, mm2/s | 0.1 to 0.51 | |
| 0.25 |
| Thermal Shock Resistance, points | 34 to 57 | |
| 25 |