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
| Physical Property | Units | Typical Value |
| Composition | - | Si3N4 |
| Grain Size | μm | 1 - 5 |
| Density | g/cc | 3.23 |
| Hardness (Vickers) | HV0.3kg/mm^2 | 1400 |
| Compressive Strength | MPa | 3500 |
| Flexural Strength | MPa | 950 |
| Weibull Modulus | - | 11 |
| Fracture Toughness | MPa-m^1/2 | 8 |
| Poisson's Ratio | - | 0.23 |
| Tensile Strength | MPa | 400 |
| Modulus of Elasticity | GPa | 290 |
| Thermal Conductivity | W/mK | 28 |
| Coefficient of Thermal Expansion (20-1000°C) | 1 x 10^-6 /°C | 3.0 |
| Thermal Shock Resistance | ΔT°C | 900 |
| Electrical Resistivity | Ω-cm | 10^12 |
| Dielectric Constant (1MHz) | 8 |
All properties are at room temperature (20°C) unless otherwise stated.