Silicon carbide probably has the best resistance to corrosion in acids and alkalis of all advanced ceramic materials. It also has extreme hardness and high thermal conductivity and outstanding mechanical properties up to 1400°C.
Silicon carbide ceramics have excellent wear resistance and are widely used as mechanical seals. The corrosion resistance ensures wide use in the Chemical Industry.
Typical Properties of Silicon Carbides
Sintered silicon Carbide (SiC) and reaction bonded silicon carbide combine excellent corrosion resistance with extreme hardness and high thermal conductivity.
Density (g/cm3) ~ 3.15
Flexural Strength (MPa) ~ 480
Elastic Modulus (GPa) ~ 410
Compressive Strength (MPa) ~ 3500
Thermal Conductivity (W/mK) ~ 150
Thermal Expansion (10-6/°C) ~ 4.4
Maximum Temperature (°C) ~ 1750
Hardness (Hv) ~ 2800
Density (g/cm3) ~ 3.10
Flexural Strength (MPa) ~ 462
Elastic Modulus (GPa) ~ 393
Compressive Strength (MPa) ~ 2700
Thermal Conductivity (W/mK) ~ 125
Thermal Expansion (10-6/°C) ~ 4.3
Maximum Temperature (°C) ~ 1400
Hardness (Hv) ~ 2500