| BN997 | BN99 | BN-CA | BN-A | BN-B | BN-C | BN-D | BN-E | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Main Composition | BN>99.7% | BN>99% | BN>97.5% | BN+SI | BN+Al₂O₃+ZrO₂ | BN+SIC | BN+ZrO₂ | BN+ALN | ||||||||
| Bonding Composition | B2O3 | B2O3 | Boron calcium oxide | Boron oxide silicon | Boron oxide aluminum | Boron oxide aluminum | B2O3 | Boron oxide aluminum | ||||||||
| Density (g/cm3) | 1.6 | 2 | 2.0-2.1 | 2.0-2.3 | 2.25-2.35 | 2.4-2.5 | 2.8-2.9 | 2.8-2.9 | ||||||||
| Room Temperature Electric Resistivity (Ω·cm) | >1014 | >1014 | >1013 | >1012 | >1012 | >1012 | >1012 | >1013 | ||||||||
| Max Using Temperature (°C) In Atmosphere In Inactive Gas In High Vacuum (Long Time) | 900 2100 1900 | 900 2100 1900 | 900 2100 1900 | 1000 1700 1700 | 1000 1700 1700 | 1000 1700 1700 | 1000 1800 1800 | 1000 1800 1800 | ||||||||
| Three-Point Bending Strength (MPA) | 18 | 35 | 35 | 65 | 65 | 80 | 90 | 90 | ||||||||
| Compressive Strength (MPA) | 45 | 85 | 70 | 145 | 150 | 175 | 220 | 220 | ||||||||
| Thermal Expansion Coefficient (20-1000°C) (10-6/K) | 1.5 | 1.8 | 1.6 | 2 | 2 | 2.8 | 3.5 | 2.8 | ||||||||
| Thermal Conductivity (W/m·k) | 35 | 40 | 32 | 35 | 35 | 45 | 30 | 85 | ||||||||
| Typical Application: | High Temperature Furance | High Temperature Furance | High Temperature Furance | Powder Metallurgy | Powder Metallurgy | Powder Metallurgy | Metal Casting | High Temperature Equipment | ||||||||
| High Temperature Electrical Furnace Components(High Temperature Insulator Sleeve Tube etc) | Y | Y | Y | Y | Y | Y | Y | |||||||||
| Metal Vaporize Crucible | Y | Y | ||||||||||||||
| The Container Of Metal or Glass Melting | Y | Y | Y | Y | Y | Y | Y | Y | ||||||||
| The Casting Mould Components Of The Precious Metal And Special Alloy. | Y | Y | Y | |||||||||||||
| High Temperature Support Part | Y | Y | Y | |||||||||||||
| Nozzle And Transport Tube Of The Melting Metal | Y | Y | Y | Y | Y | Y | Y | |||||||||
| Remark: The value is just for review, different using conditions will have a little difference. | ||||||||||||||||
