to Nitride ceramics
to Properties of ceramics
(submitted by the website administration)
| Hot Pressed Silicon Nitride (HPSN) | ||||
| Chemical composition: Si3N4 | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 3.3 *10³ | kg/m³ | 206.0 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 290 | GPa | 42100 | ksi |
| Flexural strength | 950 | MPa | 137800 | psi |
| Fracture toughness | 8 | MPa*m½ | 8 | MPa*m½ |
| Hardness | 15000 | HV | 15000 | HV |
| Thermal expansion (20 ºC) | 3.2*10-6 | ºCˉ¹ | 1.8*10-6 | in/(in* ºF) |
| Thermal conductivity | 30 | W/(m*K) | 208 | BTU*in/(hr*ft²*ºF) |
| Specific heat capacity | 780 | J/(kg*K) | 0.19 | BTU/(lb*ºF) |
| Max. working temperature | 1400 | ºC | 2550 | ºF |