Graphite vs. Low Expansion Glass-ceramic
Graphite belongs to the non-oxide engineering ceramics classification, while low expansion glass-ceramic belongs to the glass and glass-ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is graphite and the bottom bar is low expansion glass-ceramic.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 21 | |
| 83 |
| Flexural Strength, MPa | 80 | |
| 35 |
| Tensile Strength: Ultimate (UTS), MPa | 18 | |
| 53 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 220 | |
| 690 |
| Thermal Conductivity, W/m-K | 6.0 | |
| 1.5 |
| Thermal Expansion, µm/m-K | 4.9 | |
| 1.7 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.8 | |
| 2.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.7 | |
| 19 |
| Stiffness to Weight: Bending, points | 53 | |
| 59 |
| Strength to Weight: Axial, points | 2.9 | |
| 6.1 |
| Strength to Weight: Bending, points | 8.7 | |
| 13 |
| Thermal Shock Resistance, points | 12 | |
| 28 |