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
	SCR-Si1	SCR-Si2-HP	SCR-SSCR-S
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	1350 1350	1350 1350	1400 1800

 

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