Graphite vs. PES
Graphite and PES belong to fundamentally different material chemistries. Graphite is a ceramic material, while PES is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 12 material properties with values for both materials. Properties with values for just one material (22, in this case) are not shown.
For each property being compared, the top bar is graphite and the bottom bar is PES.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 21 | |
| 2.6 |
| Flexural Strength, MPa | 80 | |
| 130 |
| Tensile Strength: Ultimate (UTS), MPa | 18 | |
| 87 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 220 | |
| 200 |
| Thermal Conductivity, W/m-K | 6.0 | |
| 0.18 |
| Thermal Expansion, µm/m-K | 4.9 | |
| 53 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.8 | |
| 1.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.7 | |
| 1.1 |
| Stiffness to Weight: Bending, points | 53 | |
| 33 |
| Strength to Weight: Axial, points | 2.9 | |
| 18 |
| Strength to Weight: Bending, points | 8.7 | |
| 32 |
| Thermal Shock Resistance, points | 12 | |
| 45 |