Silicon Carbide (SiC)

Silicon Carbide has been developed to meet a high quality technical grade ceramic with excellent mechanical properties. It is highly wear acids resistant and also showing very high heat resistance, this material is widely used in abrasives, refractories and kiln furniture in extreme conditions.

Our silicon carbide products include four series: atmospheric pressure sintered silicon carbide (SSIC), reaction sintered silicon carbide (RBSIC, SISIC), recrystallized silicon carbide (ReSIC), and silicon nitride bonded silicon carbide (NSIC).


  • SSIC is mainly used to manufacture sealing rings, shaft sleeves, high-temperature nozzles, kiln furniture, bulletproof sheets, corrosion-resistant devices etc.
  • SISIC is mainly used in the manufacture of kiln beams, roller rods, flame nozzles, flame distributors, cold air ducts, burner plates, diffusion tubes, catalysts, and protection Tube etc.
  • ReSIC is mainly used to manufacture kiln furniture such as beams, shed boards, fish plates, roller bars etc.
  • NSIC is mainly used to make crucibles, fish plates, molten metal handling, melting sinkers etc.


  • No deformation at high temperature

Silicon carbide ceramic has excellent mechanical properties even at high temperature. It’s one of the most popular for sealing, support parts for long-term stable work.

  • Constant performance at high temperature

High strength and corrosion resistance which stay constant up to very high temperature of (1600 °C).  It’s one of the materiel choice for refractory and chemical resistance applications.

  • Excellent hardness

The hardness of our Sintered Silicon Carbide is near to diamond.

Technical Characteristics – Silicon Carbide (SiC)

Density  (g/cm3) 3.1 3.0 2.7 2.78
Porosity  (%) <0.1 <0.1 15 10
Elastic Modulus (GPa) 420 330 240 240
Bending strength  (MPa) 90 165
Flexural strength Room (MPa) 400 250 100 200
Thermal expansion (10-6/K) 4.1 4.5 4.8 5.0
Thermal conductivity (W/m•K) 70 160 24 15
Max. use temperature (°C) 1600 1380 1650 1550

4 points bending strength

Corrosion Situation

Environment Temp. ( SSIC (mg/cm2) SISIC (mg/cm2)
98% H2SO4 100 1.5 50
50%NaOH 100 2.5 >1000
53%HF 25 <0.2 7.0
85%H3PO4 100 <0.2 8.0
70%HNO3 100 <0.2 0.5
45%KOH 100 <0.2 >1000
25%HCl 70 <0.2 0.9