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As pure as possible - Typical physical properties of HPBN:
| Property |
Unit |
Grade BN 5000 |
Grade BN 6000 |
| Orientation |
|
parallel |
perpendicular |
par./perp. |
| Density |
g/cm³ |
1.9 |
2.1 |
Thermal conductivity
- RT
- 800°C |
W/mK |
27
21 |
31
26 |
49
28 |
| Flexural strength (RT) |
MPa |
44 |
60 |
38 |
| Compressive strength (RT) |
MPa |
30 |
48 |
70 |
Max. application temp.
- in air
- in inert gas or vacuum |
°C |
850
1800 |
850
> 2000 |
| Spec. electrical res. (RT) |
Ohm cm |
1.7 x 1014 |
4.0 x 1014 |
2.6 x 1014 |
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As dense as possible - Typical physical properties of Hatemit:
| Property |
Unit |
Grade S |
Grade G |
| Orientation |
|
parallel |
perpendicular |
par./perp. |
| Density |
g/cm³ |
2.20 |
2.21 |
Thermal conductivity
- RT
- 800°C |
W/mK |
49
28 |
49
28 |
49
28 |
| Flexural strength (RT) |
MPa |
32 |
46 |
22 |
| Compressive strength (RT) |
MPa |
117 |
113 |
69 |
Max. application temp.
- in air
- in inert gas or vacuum |
°C |
850
1600 |
850
1600 |
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As 'BN' as necessary - Typical physical properties of BN-Composites
| Property |
Unit |
Value |
| Density |
g/cm³ |
2.6 - 2.8 |
Thermal conductivity
- RT°C
- 800°C |
W/mK |
30
18 |
| Thermal shock resistance |
|
excellent |
| Thermal expansion coefficient (RT - 1000°C) |
1/K |
6x10-6 |
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