Silicon Carbide Material Properties

Silicon Carbide (SiC), is a ceramic also known as carborundum that offers superior heat resistance maintaining high mechanical strength in temperatures reaching 1400° C. Additional properties include extreme hardness, good fatigue resistance, high thermal conductivity, low coefficient of thermal expansion, high chemical inertia and resistance to corrosion. The relatively high thermal conductivity and low coefficient of thermal expansion result in favorable thermal shock resistance when compared to other ceramic materials.

Applications for precision balls include: bearings, pumps, electronics, sensors, medical devices


Silicon Carbide

MECHANICAL PROPERTIES
density 3.1 g/cm3
porosity 0%
color black
flexural strength 550 MPa
elastic modulus 410 GPa
Poisson’s ratio 0.14
compressive strength 3900 MPa
hardness 2800 Kg/mm2
Fracture Toughness KIC 4.6 MPa•m1/2
Maximum Use Temperature (no load) 1650 °C
THERMAL PROPERTIES
thermal conductivity 120 W/m•K
coefficient of thermal expansion 4.0 x10–6/°C
specific heat 750 J/Kg•K
ELECTRICAL PROPERTIES
dielectric strength semiconductor
volume resistivity 102–106 ohm•cm
*values are for guidance only