Chamotte content: 25% Chamotte grain size: 0-0.2mm Drying Shrinkage: 7% Colour: brown (1070°C), black (1120°C) Burning Shrinkage: 5% (1070°C), 7% (1120°C) Water absorption: 4% (1070°C), 1% (1120°C) Coefficient of thermal expansion (20-400°C): 71×10-7/K (1070°C), 65×10-7/E (1120°C)