Carbon-carbon vs. PETG
Carbon-carbon and PETG belong to fundamentally different material chemistries. Carbon-carbon is a ceramic material, while PETG is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 13 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.
For each property being compared, the top bar is carbon-carbon and the bottom bar is PETG.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 240 | |
| 55 |
| Elastic (Young's, Tensile) Modulus, GPa | 95 | |
| 2.2 |
| Tensile Strength: Ultimate (UTS), MPa | 19 | |
| 53 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 760 | |
| 1200 |
| Thermal Conductivity, W/m-K | 40 | |
| 0.29 |
| Thermal Expansion, µm/m-K | 4.0 | |
| 68 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.7 | |
| 1.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 31 | |
| 1.0 |
| Stiffness to Weight: Bending, points | 89 | |
| 34 |
| Strength to Weight: Axial, points | 3.0 | |
| 12 |
| Strength to Weight: Bending, points | 9.1 | |
| 25 |
| Thermal Diffusivity, mm2/s | 31 | |
| 0.19 |
| Thermal Shock Resistance, points | 3.5 | |
| 25 |