StarCeram® S Sintered Silicon Carbide (SSiC)



The key benefits of StarCeram® S include: Excellent chemical resistance, very high strength, corrosion resistance up to very high application temperatures, excellent mechanical high temperature properties, very good thermal shock resistance, low thermal expansion, very high thermal conductivity, high wear resistance, very high hardness, semiconductor properties.



Density ρ

3.1 g/cm³ at 20 °C


Elastic modulus E

395 GPa at 20 °C

Flexural strength σbend

400 MPa at 20 °C

4-point bending, 40/20mm

Fracture toughness KIC

3 MPa·√m at 20 °C

Hardness, Vickers HV

2550 [-] at 20 °C

converted from 25 GPa

Weibull modulus mW

10 [-] at 20 °C



Coefficient of thermal expansion α

4.5E-6 1/K at 20 °C

RT - 1000°C

Max service temperature Tmax

1600 °C

Thermal conductivity λ

125 W/(m·K) at 20 °C

Thermal shock parameter R1 R1

180 °C


Electrical resistivity ρel

1000 - 10000 Ω·m at 20 °C

Technological properties

Application areas

Air separator wheels, bearing bushes, protection sleeves, crucibles, cylinder linings, dose bushes, pistons, extruder screws, mill linings, nozzles, slide valves, rotors, seals, split rings, sliding rings, stationary seats, thermocouple protection tube, wear protection parts

This material data has been provided by KYOCERA Fineceramics Precision GmbH.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.