Boron Nitride Bar

Boron nitride (BN) bars or rods are usually the raw material to make fine parts. It could also directly be applied directly as insulators or structural parts in some electronic or vacuum equipment.
Bars with higher purity usually could withstand higher temperature, especially in vacuum and inert protection, than enhanced BN products which is lower purity in boron nitride content. Although we usually claim the maximum working temperature as 2500C, there's record to use our material at 3000+ C for pure boron nitride. Due to the low wettability with metals, boron nitride is an ideal material for metal melting works, especially for high purity material metal in vacuum.
Hexagonal Boron Nitride, or h-BN, with hardness about 4, is a machinable material. HBN/HBR is originally a product code for other manufacture and represents for the boric oxide or calcium enhanced BN material respectively. Amerigo Scientific also provides calcium borate enhanced BN bars with similar performance compared with HBN and HBR. Although calcium (or zirconium) enhanced HBR (or ZSBN) are the most common composite boron nitride material, we also produce a series of other composite boron nitride, such as AlN-BN, SiC-BN. HBT is a product code for thermal purified hexgonal boron nitride ceramic, same to our TPBN material.
Common properties and advantage of boron nitride (compared with the other ceramic materials)
· 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).

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