LCP vs. PEEK
Both LCP and PEEK 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 LCP and the bottom bar is PEEK.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 11 to 24 | |
| 4.0 to 24 |
| Elongation at Break, % | 1.0 to 3.0 | |
| 1.6 to 43 |
| Flexural Modulus, GPa | 9.0 to 23 | |
| 3.8 to 19 |
| Flexural Strength, MPa | 160 to 320 | |
| 150 to 330 |
| Tensile Strength: Ultimate (UTS), MPa | 180 to 230 | |
| 97 to 200 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 240 to 270 | |
| 160 to 300 |
| Maximum Temperature: Decomposition, °C | 520 | |
| 570 |
| Melting Onset (Solidus), °C | 280 | |
| 340 |
| Specific Heat Capacity, J/kg-K | 1020 to 1200 | |
| 1390 to 1700 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.4 to 1.6 | |
| 1.3 to 1.5 |
| Limiting Oxygen Index (LOI), % | 35 | |
| 38 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.4 to 8.9 | |
| 1.5 to 10 |
| Stiffness to Weight: Bending, points | 51 to 65 | |
| 36 to 73 |
| Strength to Weight: Axial, points | 33 to 43 | |
| 20 to 41 |
| Strength to Weight: Bending, points | 45 to 56 | |
| 36 to 55 |