Silicon Nitride

Silicon Nitride


Silicon Nitride’s unique properties of high strength, superior fracture toughness and excellent hardness provides a unique engineering material solution for your project’s extreme environments and demanding mechanical / structural requirements.

Superior Thermal Shock Resistance

The cross-linked microstructure of our silicon nitride material allows for very high thermal shock resistance as compared to other advanced ceramic materials.

Excellent Fracture Toughness & High Mechanical Strength

Our Si3N4 material is an excellent choice for your high temperature structural applications.

Silicon Nitride Properties

Composition Grain Size (μm) Density (g/cc) Hardness (Vickers) (HV0.3kg/mm^2) Compressive Strength (MPa) Flexural Strength (MPa) Weibull Modulus Fracture Toughness (MPa-m^1/2) Poisson's Ratio Tensile Strength (MPa) Modulus of Elasticity (GPa) Thermal Conductivity (W/mK) Coefficient of Thermal Expansion - 20-1000°C (1 x 10^-6 /°C) Thermal Shock Resistance (ΔT°C) Electrical Resistivity (Ω-cm) Dielectric Constant (1MHz)
Si3N4 1 - 5 3.23 1400 3500 950 11 8 0.23 400 290 28 3 900 10^12 8

All properties are at room temperature (20°C) unless otherwise stated.

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