Graphite

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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.

Key Benefits

  • Technological Merit
  • Excellent corrosion resistance
  • High heat conduction performance
  • Good mechanical strength
  • Good resistance to thermal shock
  • Long life

Material Properties

PropertyUnitValue
Bulk Densityg/cm31.77
Flexural StrengthMPa45
Tensile StrengthMPa29
Compressive StrengthMPa98
Specific Resistanceμohm.cm1550
Grain Sizeµm15
Hardness – Shore52
Hardness – Rockwell H95
Coefficient of thermal expansion (400 to 500oC)oC4.3 x 10E-6
Porosity%9
Thermal ConductivityW/moC85
Modulus of ElasticityGPa9.2
Ashppm750
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