Silicone carbide (SiC, SiSiC, SSiC) has an exceptional set of properties:

  • high hardness (4th after diamond);
  • high thermal conductivity;
  • excellent corrosion resistance;
  • low coefficient of thermal expansion;
  • low density;
  • semiconductor properties;
  • stability in a wide range of temperatures;
  • low friction coefficient.


All these combinations make material irreplaceable in the production of corrosion-resistant, wear-resistant and heat-resistant products for a variety of industries.


The main applications are:

  • bearings for pumps and compressors;
  • rings of mechanical seals;
  • ceramic plungers;
  • elements of valves and stop valves;
  • lining for protection from wear and corrosion;
  • sorting wheels of various grinding machinery;
  • lining for cyclones and calciners for cement plants;
  • nozzles;
  • crucibles, boats;
  • burners;
  • furniture and lining of furnaces;
  • substrates, plates;
  • products for the metallurgical industry.


There are two main types of silicon carbide:

  • reactively bonded silicon carbide (SCR-Si1, SCR-Si2)

There is free silicon in the composition of the material. This material is cheaper, but not recommended for alkali applications.

  • sintered silicon carbide (SCR-S)

Pure silicon carbide. More expensive, but versatile. Recommended for all environments.

Basic properties of the material

Propertioes Brand of material
Composition SiC+Si SiC+Si+C SiC
Density, g/sm3 3,05-3,07 3,00-3,05 3,10-3,15
Isolated porosity, % 0 0 2
Hardness (at SiC), GPa 25-30 25-30 25-30
Flexural strength, MPa 320-350 270-300 380-410
Compressive strength, MPa 3300-3500 2800-3100 3000-3500
Thermal conductivity at 20-100°С, W/mK 110-120 100-130 100-110
Coefficient of linear thermal expansion at 20-1000°С, 10-6 К-1 3,4-4,9 3,5-5,0 3,0-4,6
Maximum operating temperature

Oxidative environment

A reducing or inert environment











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