Graphite vs. Boron Carbide
Both graphite and boron carbide are non-oxide engineering ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is graphite and the bottom bar is boron carbide.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 90 | |
| 1710 to 2200 |
| Elastic (Young's, Tensile) Modulus, GPa | 21 | |
| 240 to 460 |
| Flexural Strength, MPa | 80 | |
| 170 to 410 |
| Tensile Strength: Ultimate (UTS), MPa | 18 | |
| 350 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 220 | |
| 1000 to 2500 |
| Thermal Conductivity, W/m-K | 6.0 | |
| 31 to 90 |
| Thermal Expansion, µm/m-K | 4.9 | |
| 4.5 to 5.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.8 | |
| 2.1 to 2.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.7 | |
| 63 to 100 |
| Stiffness to Weight: Bending, points | 53 | |
| 91 to 100 |
| Strength to Weight: Axial, points | 2.9 | |
| 37 to 47 |
| Strength to Weight: Bending, points | 8.7 | |
| 42 to 53 |
| Thermal Shock Resistance, points | 12 | |
| 9.7 to 20 |