Boron Nitride Blank (BN Blank)
We provide standard products & tailor-made products for hot-pressed boron nitride blanks. Except for pure BN99 blank, we also supply BN composites with silicon carbide, calcium borate, aluminum nitride and zirconia, to fulfill various of demand for the customers. Check the boron nitride specifications for our pure BN99 and zirconia composite material ZSBN.
Boron nitride (BN) blanks are usually the raw material to make the other machined parts. It could also directly be applied directly as insulators in some electronic or vacuum equipment with simple machining.
Edgetech supplies pure and enhanced BN blanks in all available dimensions with quick turnaround. Typical BN products are smaller than 12″ dia x 15″ length rod, due to the limitation of our equipment.
Boron Nitride Blank Basic Information & Materials
|Material||High purity/Enhanced hot pressed hexagonal boron nitride|
|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||Max: 12″ dia. x 16″ H|
Boron Nitride Materials
|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 Blank Advantages:
-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).
As a ceramic material, boron nitride is quite fragile in a lot of cases. Our Hot-Pressed Boron Nitride Blank 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.