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Ceramisis Ltd
29, Harley Street,
London,
W1G 9QR,
England
Tel:44(0)20 7927 6710
Fax:44(0)20 7637 0419
sales@ceramisis.com
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In
vacuum substrate heating
•
Vacuum & high temperature materials
• Vacuum
furnace insulation |
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>Boron Nitride Silica (BNS26) Material Properties.
BNS26
is a unique material combining Boron Nitride with Silica,
essentially giving some of the best properties of both Macor and
Boron Nitride. BNS26 is a hydrophobic advanced ceramic and is
resistant to moisture (unlike boron nitride). It is suitable for the
most severe electrical applications, is an excellent refractory
material up to 1400C, and has excellent resistance to thermal shock.
It is an ideal material for heater element supports and bases.
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Material |
BNS26 |
Units |
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Volume resistivity @
RT
@ 150C |
para 6.4x10e14
perp 52.9x10e15
para 2.4x10e13
perp 3.3x10e13 |
ohm/cm |
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Surface resistivity
@ RT
@ 150C |
4.2x10e16
1.5x10e15 |
ohm/cm |
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Coefficient of Thermal expansion |
para 3.0 perp 0.1 |
x 10-6°C |
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Thermal conductivity
@ RT
@ 1000C |
para 11 perp 29
para 6 perp 16 |
w/mk |
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Max use temp. |
1400 |
°C |
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(in oxidizing atmosphere) |
1200 |
°C |
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Bending strength |
para 64
perp 34 |
Mpa |
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Open porosity |
6.7 |
% |
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Specific Heat @ 25C
@ 700C |
0.765
1.550 |
J/g°C |
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Dielectric Strength. |
1690 |
V/mm |
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Colour |
White |
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If you have a component part you need made or
would like pricing on the raw material, contact us by E-mail,
Telephone or Fax to discuss. We have years of technical knowledge and
experience to help with your applications.
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