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Silicon nitride ceramic round rod

Typical properties of silicon nitride ceramics
  • High strength over a wide temperature range
  • High fracture toughness
  • High hardness
  • Outstanding wear resistance
  • Low thermal expansion and high thermal conductivity
  • Good thermal shock resistance
  • Good resistance to chemical and oxidation
  • 0302

Silicon Nitride Rods, Si3N Rod

Silicon nitride ceramic is an inorganic material ceramic that does not shrink during sintering.The strength of silicon nitride, especially hot-pressed silicon nitride, is one of the hardest substances in the world. Si3N4 Rod is a covalent bond compound with high strength, low density, and high temperature resistance.

Properties Of Silicon Nitride




 Color Black/Grey-
Bending Strength750MPa
 Compressive Strength3800MPa
Elastic Modulus290GPa
Fracture Toughness7MPa m1/2
Weber Coefficient15m
Vickers Hardness1700HV 0.5



Coefficient of Line

Thermal Expansion

210-6 K-1
 Thermal Conductivity20W/mK
Thermal Shock Resistance (Put in Water)750ΔT℃
Max Working Temperature1300



Volume Resistance at 20℃>10Ωcm
Dielectric Strength10×106V/m
Dielectric Constant-εr

One MHZ Dielectric

Loss Angle at 20℃




Nitric Acid(60%)90℃1WT Loss mg/cm2/day
Sulphuric Acid(95%)95℃≒0.00
Caustic Soda(30%)80℃0.2

This data is the result of laboratory testing. Customers need to judge whether it can be used according to the specific environment.

For more customization details, Please contact us.

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