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Machined Graphite Hot Zone Hardware

General purpose extruded graphite, having good resistance to thermal shock. It has good dimensional, electrical and thermal stability, with high density and mechanical strength.


Typical Applications

Crucibles and sintering boats.

Furnace parts.

Heating elements.

Machined components.

  UNITS   LONGITUDINAL TRANSVERSE
Density g/cc   1.73  
Particle size max/average mm   0.38/0.14  
Helium porosity %   15  
Permeability Darcys 0.004   0.004
Specific electrical resistance u ohm M 7   9.8
Thermal conductivity W/moC 180   120
Flexural strength MPa 23   16
Tensile strength Mpa 19.5   12.5
Compressive strength Mpa 48    
Young's modulus GPa 11.5   6.8
Coefficient thermal expansion (30 to 100┬║C) 10-6 /oC 2.2   3.9
Linear scale┬áhardness MPa   230  
Ash content %   0.07  
Iron content ppm   90