Product Description
Boron nitride ceramics
Features:Good electrical insulation, thermal conductivity, excellent thermal shock resistance and chemical stability, good
moisture resistance to molten metal, slag and glass.
Features:Good electrical insulation, thermal conductivity, excellent thermal shock resistance and chemical stability, good
moisture resistance to molten metal, slag and glass.
Boron nitride ceramic is resistant to acid and alkali corrosion, has strong electrical insulation, and has an
electrical breakdown strength of 3-4 times that of alumina. Boron nitride ceramics have excellent high
temperature resistance.
The use temperature is 1800 degrees under vacuum, and the use temperature is 2100 degrees under the
The use temperature is 1800 degrees under vacuum, and the use temperature is 2100 degrees under the
protection of atmosphere(nitrogen, argon and other inert gases). The boron nitride ceramic has a high
thermal conductivity, strong thermal shock resistance, and does not crack when quenched at 1500 degrees.
It is taken out of the furnace at a temperature of 1000 degrees for 20 minutes, and then blown and quenched
for hundreds of times without cracking. Boron nitride ceramics do not react and do not adhere to many metals, ceramics, rare earths and other materials.
Application: high temperature electric furnace components (high temperature insulation sleeves, etc.), metal
Application: high temperature electric furnace components (high temperature insulation sleeves, etc.), metal
evaporation crucibles, various devices for molten metal or glass, precious metal or special alloy casting mold
parts, high temperature support and other stressed components, molten metal transport pipes, nozzles ect.
Material data:
BN | ||||
Chemical component | % | >99 | ||
Density | g/cm3 | 2.15 | ||
Richter hardness | HL | 450 | ||
Flexural strength | Mpa | 95 | ||
Thermal expansivity (25C-1200C) | 10-6/K | 1~2 | ||
Thermal conductivity at 20C | W/mk | 35 | ||
Max temperature | oxidizing | 900C | ||
Thermal expansion coefficient | vacuum | 1600C | ||
Thermal shock resistance | inert atmosphere | 1800C | ||
Resistivity at room temperature | Ω.cm | >10^14 | ||
Applications:
By courier express or by air
For small package,gross weight <68 kgs or 100 kgs.>68 kgs,by air is better.
By sea
For big package,gross weight>100 kgs or large volume.
By railway
According to requirement from customers.
