Non-pressure Sintered Silicon Carbide (SSiC) is a material sintered from high purity submicron silicon carbide powder between 2100 ° C and 2200 ° C. It consists of fine grains made of high-purity silicon carbide, and therefore has high hardness, strength and excellent wear resistance. SSiC is considered the best corrosion resistant material among all industrial ceramics. Further advantages are the low density (40% steel), the low thermal expansion coefficient, the high thermal conductivity and the high thermal shock resistance. Because of these properties, SSiC ceramic can be used for a long time in an oxidizing atmosphere at 1650 ° C. SSiC is a good material for the production of mechanical seals, automotive components, armor, heat exchanger tubes, blast nozzles, wear parts, wafer carriers etc.

Reaction-bound silicon carbide (SiSiC) is sintered with high purity silicon carbide and graphite in vacuum at 1600 ° C. It contains 10% to 12% free silicon. As typical for industrial ceramics, the material has a high fire resistance and wear resistance with a low coefficient of friction. SiSiC can be used in all chemicals except hydrofluoric acid and alkali. Compared to sintered silicon carbide, it can be made into more complex shapes. The change in size before and after sintering is very small for SiSiC.