Physical Properties of Halsic Materials*
 Contents:
 SiC metallic Si
vol % ³99 ³99** 88-92
12-8
>99
 Density 20°C g/cm3 2.7 2.7 3.1 3.1
 Water absorption capacity weight % 5 5 £0.1 £0.1
 Flexural strength at 20°C*** MPa 80-100 80-100 240-280 350-400
 Flexural strength at 1300°C MPa 90-110 90-110 250-300 370-420
 Thermal expansion 20-1000°C, linear 10-6 K-1 4.5 4.5 4.3 5.0
 Thermal conductivity 200°C†† Wm-1 K-1 35 35 100 124
 Thermal conductivity 1200°C Wm-1 K-1 26 26 32 33
 Young's modulus, static 20 °C GPa 280 280 370 420dyn
 Thermal shock resistance very good very good very good very good
 Maximal application temperature††† °C approx 1600
approx 2000••
approx 1650 approx 1350 approx 1600

*The physical properties listed above are derived from test specimens. These values can only be used as a reference to technical products and other forms and dimensions. **Including chemical doping agents.
***4-point flexural strength. 3-point- flexurals strength ††Laser flash method. †††Depending on mechanical load and atmosphere. In oxidising atmosphere. ••In protective atmosphere.

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