| Properties of Silicon Nitride (Si3N4) Ceramics | ||
| Item | Unité | Typical Values |
| Physical Properties | ||
| Densité | g/cm³ | 3.2 |
| Mechanical Properties | ||
| Moh’s hardness | Grade | 9 |
| Rockwell Hardness | HRA | 90 |
| Vickers Hardness (Hv50) | HV0.5 | >1550 |
| Modulus of Elasticity | GPa | 290 |
| Flexural Strength | MPa | >600 |
| Compressive Strength | MPa | 2500 |
| Fracture toughness | Mpam1/2 | >6.0 |
| Thermal Properties | ||
| Maximum use temperature | °C | 1200 |
| Conductivité thermique | W/(m.k) | 15-20 |
| Coefficient de dilatation thermique | 10-6/°C | >3.1 |
| Résistance aux chocs thermiques | △T°C | 500 |
| Capacité calorifique spécifique | KJ/kg.K | 700 |
| Electrical Properties | ||
| Rigidité diélectrique | kV/mm | 15 |
| Constante diélectrique | Er | |
| Volume Resistivity at 20°C | Ω.cm | 1.0X1012 |