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to Properties of ceramics
(submitted by the website administration)
| Reaction Bonded Silicon Nitride (RBSN) | ||||
| Chemical composition: Si3N4 | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 2.2 *10³ | kg/m³ | 137.3 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 130 | GPa | 18900 | ksi |
| Flexural strength | 260 | MPa | 37700 | psi |
| Fracture toughness | 2.9 | MPa*m½ | 2.9 | MPa*m½ |
| Hardness | 9000 | HV | 9000 | HV |
| Thermal expansion (20 ºC) | 2.5*10-6 | ºCˉ¹ | 1.4*10-6 | in/(in* ºF) |
| Thermal conductivity | 10 | W/(m*K) | 69 | BTU*in/(hr*ft²*ºF) |
| Specific heat capacity | 780 | J/(kg*K) | 0.19 | BTU/(lb*ºF) |
| Max. working temperature | 1400 | ºC | 2550 | ºF |
