Boron Nitride Composite Ceramics BN-E/S grades
| Grade | BN-E | BN-S | ||
|---|---|---|---|---|
| Main Ingredients | BN+ZrO2+Si | BN+Si3N4 | ||
| Density | g/cm3 | >2.3 | g/cm3 | >2.7 |
| Hardness | HL | 600 | HL | 650 |
| Flexural Strength | Mpa | 150 | Mpa | 300 |
| Coefficient of Thermal Expansion | (10-6/K) | 2~3 | (10-6/K) | 2~3 |
| Thermal Conductivity at 20°C | W/mk | 15 | W/mk | 45 |
| MAX-Temperature of use | Oxidizing | 900°C | Oxidizing | 1700°C |
| Vacuum | 1800°C | Vacuum | ||
| Inert | 1700°C | Inert | ||
| RT Resistivity | Ω.cm | >1012 | Ω.cm | >1014 |
These Boron Nitride composite ceramics have good resistance to creep, corrosion and thermal shock. They are suitable for almost all molten metals in high temperature.
Typical Applications
- Boron nitride continuous casting break rings
- Boron nitride side dams for thin-strip casting
- Boron nitride nozzles for amorphous and nanocrystalline
- Nozzles for powder metal atomization
