to Nitride ceramics
to Properties of ceramics
(submitted by the website administration)
| Sintered Silicon Nitride (SSN) | ||||
| Chemical composition: Si3N4 | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 3.25 *10³ | kg/m³ | 202.9 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 290 | GPa | 42100 | ksi |
| Flexural strength | 850 | MPa | 123300 | psi |
| Fracture toughness | 7 | MPa*m½ | 7 | MPa*m½ |
| Hardness | 11000 | HV | 11000 | HV |
| Thermal expansion (20 ºC) | 3.0*10-6 | ºCˉ¹ | 1.7*10-6 | in/(in* ºF) |
| Thermal conductivity | 27 | W/(m*K) | 187 | BTU*in/(hr*ft²*ºF) |
| Specific heat capacity | 780 | J/(kg*K) | 0.19 | BTU/(lb*ºF) |
| Max. working temperature | 1300 | ºC | 2370 | ºF |