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Products   >   Boron nitride high purity ceramic
BN Protective Tubes (sleeve)

Material: BN99

Wear resistance, high insulation, and high-temperature resistance

As boron nitride is a machinable ceramic material, we can craft it to your specifications within approximately 2 weeks based on the provided drawings. Please click ‘inquiry’ to send us a message and, if needed, email a drawing.

PRODUCT DESCRIPTION

1. Electrode insulating sleeve for vacuum sintering furnace and atmosphere furnace
2. Thermocouple protective sleeve
3. Insulation fittings for vacuum coating equipment
4. Insulation fittings for polysilicon ingot foundry
5. Metal, glass, and other molding molds
6. Used for sintering and smelting alloy, Ceramic substrate, rare earth, and other materials.

                                   Grade
Typical Value 

BN-HS

BN-HQ

BN-HC

Purity (%)

BN>99.7%

BN>99.3%

BN>99%

Color

White

White

White

Density (g/cm3)

1.3-1.4

1.5-1.6

1.9-2.0

Oxygen content (%)

≦0.1

≦0.1

≦0.35

Volume resistivity (Ω・cm

>1014

>1014

>1014

Operating temp
          (℃)

  Air

≦900

≦900

≦900

 Inert gas

≦2100

≦2100

≦2100

 Vacuum

≦1900

≦1900

≦1900

Bending strength (MPa)

18

30

40

Coefficient of thermal expansion (10-6/℃)

-0.4

-0.4

1.5

Thermal conductivity (W/m・K)

60

50

35

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