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Our Materials

Natural Amorphous Graphite

Typical Chemical Analysis, Loss on Ignition at 950 degrees Celsius

Total Carbon 60 – 85%
Fixed Carbon 58 – 83%
Volatile Matter 2 – 4%
Ash 15 – 40%
Moisture 2% maximum
Sulfur 0.05 – 0.10%

Total Carbon + Ash = 100%
Fixed Carbon = Total Carbon – Volatile Matter


Typical Ash Analysis

Silica (SiO2) 51.94%
Aluminum (Al2O3) 33.60%
Iron Oxide (Fe2O3) 12.40%
Titanium Dioxide (TiO2) 0.43%
Magnesium Oxide (MgO) 0.60%
Calcium Oxide (CaO) 0.68%
Sodium Oxide (Na2O) 0.13%
Potassium Oxide (K2O) 0.22%


Properties of Amorphous Graphite

Melting Temperature: It has two triple points (points at which three phases coexist in equilibrium) – 3,550ºC under a pressure of 88 kg/cm2 – 3,726ºC at 100,000 atmospheres of pressure.

Sublimation: Between 3,300º and 3,550ºC at a pressure of 1.033 kg/cm2.

Thermal Oxidation: It begins to oxidize in the presence of oxygen at 300ºC.

Combustion: It is combustible in the presence of oxygen at temperatures between 620º and 670ºC.

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