Graphite

Graphite Grade 2020 crucibles offer high performance with good technical and economic effect. They are used in metallurgy, casting, chemical and (scientific) industry in general; they are also used to produce alloy tool steel melting and non-ferrous metal and alloy melting.  Maximum service temperature is 427oC, maximum inert atmosphere service temperature is 2760oC

 

Property Unit Value
Bulk Density g/cm3 1.77
Flexural Strength MPa 45
Tensile Strength MPa 29
Compressive Strength MPa 98
Specific Resistance μohm.cm 1550
Grain Size µm 15
Hardness - Shore 52
Hardness - Rockwell H 95
Coefficient of thermal expansion (400 to 500oC) / oC 4.3 x 10E-6
Porosity % 9
Thermal Conductivity W/moC 85
Modulus of Elasticity GPa 9.2
Ash ppm 750
  • Technological Merit
  • Excellent corrosion resistance
  • High heat conduction performance
  • Good mechanical strength
  • Good resistance to thermal shock
  • Long life.

Shapes

  • Cylindrical Crucibles
  • Ebeam Crucibles
  • Glassy Carbon Planchets (Disks)
  • Carbon Tubes