Silicon Carbide
Silicon carbide is a compound composed of silicon and carbon, with the chemical formula (SiC). It is a hard, brittle crystalline material with excellent thermal conductivity, high melting point, and resistance to chemical wear.
The following table provides a comprehensive list of silicon carbide properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Note: click on the button to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Chemical Formula | SiC |
| Molar Mass | 40.096 g/mol |
| Density | 3160 kg/m3 |
| Mechanical Properties | Metric |
| Young’s Modulus (E) | 400 - 450 GPa |
| Thermal Properties | Metric |
| Melting Point | 2730 °C |
| Thermal Conductivity (α-SiC) | 42.5 W/m·K |
| Thermal Conductivity (β-SiC) | 135 W/m·K |
| Specific Heat Capacity (α-SiC) | 700 J/kg·K |
| Specific Heat Capacity (β-SiC) | 1205 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 4.3 - 4.6 1/°C |
Note: unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017.