PEEK vs. LCP
Both PEEK and LCP are thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is PEEK and the bottom bar is LCP.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 4.0 to 24 | |
| 11 to 24 |
| Elongation at Break, % | 1.6 to 43 | |
| 1.0 to 3.0 |
| Flexural Modulus, GPa | 3.8 to 19 | |
| 9.0 to 23 |
| Flexural Strength, MPa | 150 to 330 | |
| 160 to 320 |
| Tensile Strength: Ultimate (UTS), MPa | 97 to 200 | |
| 180 to 230 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 160 to 300 | |
| 240 to 270 |
| Maximum Temperature: Decomposition, °C | 570 | |
| 520 |
| Melting Onset (Solidus), °C | 340 | |
| 280 |
| Specific Heat Capacity, J/kg-K | 1390 to 1700 | |
| 1020 to 1200 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.4 to 1.6 |
| Limiting Oxygen Index (LOI), % | 38 | |
| 35 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 10 | |
| 4.4 to 8.9 |
| Stiffness to Weight: Bending, points | 36 to 73 | |
| 51 to 65 |
| Strength to Weight: Axial, points | 20 to 41 | |
| 33 to 43 |
| Strength to Weight: Bending, points | 36 to 55 | |
| 45 to 56 |