Boron Nitride Tube (BN Tube)
Dimensions: Length: 10~400mm, ID: >2mm
Boron Nitride Tube (BN Tube)
Edgetech provides standard products & tailor-made products for hot-pressed boron nitride tube. Except for pure BN99 tube, we also supply BN composites with silicon carbide, calcium borate, aluminum nitride, and zirconia, to fulfill various demands of the customers. Check the boron nitride specifications for our pure BN99 and zirconia composite material ZSBN.
Typical boron nitride tubes are smaller than 12″ diameter x 12″ length due to the limitation of our equipment. Boron nitride tubes could be connected together to make longer boron nitride tubes, with flat or threaded joints. Other forms of boron nitride tubes could be available with drawings.
Boron Nitride Tube Basic Information & Materials
| Material | BN99, BN60, ZSBN, BN-AlN, HBR, ZSBN |
| Molecular Weight | 24.82 |
| Appearance | White |
| Melting Point | 2973 °C |
| Density | 2.1 g/cm3 (h-BN); 3.45 g/cm3 (c-BN) |
| Solubility in H2O | Insoluble |
| Refractive Index | 1.8 (h-BN); 2.1 (c-BN) |
| Electrical Resistivity | 13 to 15 10x Ω-m |
| Dimensions | Length: 10~400mm, ID: >2mm |
Boron Nitride Materials
| Material | Description |
| BN99 | Hot pressed at high temperature (1900℃). Excellent corrosion resistance and thermal conductivity. Limited wear resistance Self-bonded and high purity (>99%) |
| BNBO | General-purpose material Bonded by boric oxide |
| BNCB | Calcium borate bonded boron nitride Enhanced moisture resistance |
| BN60 | BN 60%, SiO2 40% |
| BN40 | BN 40%, SiO2 60% |
| ZSBN | BN-45%, Zr2O3 45% |
Boron Nitride Tube Advantages & Applications:
-Low wettability to molten metal
-Relatively high thermal conductivity with low thermal expansion
-Relatively high thermal shock resistance
-Extremely high working temperature with proper inert gas protection (>3000C has been recorded).
Based on the above properties, Boron Nitride Tube is an ideal choice in a wide range of industries, such as:
-Electric insulators in vacuum system
-Boron Nitride components for PVD, MOCVD, MBE system.
-Nozzles for nonferrous metals metallurgy industry
-Spacers for glass melting
-Insulators for high-temperature furnace
Packing
As a ceramic material, boron nitride is quite fragile in a lot of cases. Our Hot-Pressed Boron Nitride Tube is carefully handled to minimize damage during storage and transportation. Suitable outer boxes and inner cushioning materials are used for BN products, vacuum packing is also engaged for some of the parts.
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