Silicon Carbide vs. Titanium Diboride
Both silicon carbide and titanium diboride are non-oxide engineering ceramics.
For each property being compared, the top bar is silicon carbide and the bottom bar is titanium diboride.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 2780 to 3900 | |
| 3540 |
| Elastic (Young's, Tensile) Modulus, GPa | 370 to 490 | |
| 290 |
| Flexural Strength, MPa | 410 to 600 | |
| 380 |
| Fracture Toughness, MPa-m1/2 | 3.4 to 4.6 | |
| 6.5 |
| Knoop Hardness | 2500 to 2900 | |
| 2800 |
| Poisson's Ratio | 0.14 to 0.21 | |
| 0.11 |
| Tensile Strength: Ultimate (UTS), MPa | 210 to 370 | |
| 280 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 500 to 1590 | |
| 1270 |
| Maximum Thermal Shock, °C | 210 to 660 | |
| 110 |
| Specific Heat Capacity, J/kg-K | 670 to 1180 | |
| 870 |
| Thermal Conductivity, W/m-K | 120 to 170 | |
| 58 |
| Thermal Expansion, µm/m-K | 4.0 to 4.5 | |
| 8.0 |
Electrical Properties
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 0.94 to 3.3 | |
| -6.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.0 to 3.2 | |
| 4.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 69 to 84 | |
| 35 |
| Stiffness to Weight: Bending, points | 79 to 82 | |
| 49 |
| Strength to Weight: Axial, points | 18 to 34 | |
| 17 |
| Strength to Weight: Bending, points | 24 to 38 | |
| 21 |
| Thermal Diffusivity, mm2/s | 38 to 79 | |
| 15 |
| Thermal Shock Resistance, points | 6.9 to 18 | |
| 8.7 |