Silicon-carbide is the execellent, material among the secondary frictional materials. The frictional factor of the combination of silicon-carbide and carbon-graphite is the least. So, silicon-carbide is widely applied to components of high-temperature heat engine, abrasion resistant parts of pump valve, and the industrial fields ofautomobile, astronavigation, shipping and etc.

Technical Parameter of Reaction Bonded Silicon Carbide
Density(g/cm3) 3.00-3.05
Strength( HS) 110-120
Modulus of Elasticify(Gpa) 394
Tensile Strength(Mpa) 28
Bending Strength(Mpa) 338
Compression Strength(Mpa) 1120
Thermal Coefficient of Expansion (1/certigrade) 4.3*10-6
Heat-resisting Temperature (in atmosphere) 1300 certigrade
Thermal Shock Coefficient (cal/cm. Sec) 46.5
Free-Silicon value(%) 10

Technical Parameter of Sintered Silicon Carbide
Purity(%) larger than97
Indicated Porosity(%) less than 0.2
Density(g/cm3) not less than3. 10
Hardness(HS) not less than 115
Modulus of Elasticity(Gps) not less than 450
Bending Strength(Mpa) not less than 400
Free-Silicon(%) not larger than 0.2
Free-Carcon(%) not larger than 0.2