SIO-2 Porcelain Black Ice - 5kg (Firing Colour - Intense Black)

Black porcelain Black Ice is a black porcelain noted for its beautiful black graphite. It has high plasticity, which makes it ideal for wheel-throwing and modelling. Its formula is very stable and provides a secure firing range between 1200 and 1240ºC (oxidizing atmosphere). Suitable for tableware (food-safe), according to ISO 6486:1999. Available in extruded body (moist form). Presented in a practical 5 kg cylindrical format with double packaging. Firing range: 1200-1240ºC Biscuit temperature: 1000ºC Water content: 20% Plasticity (IP Atterberg): 11 Carbonate content (CaCO3): 0% Drying shrinkage: 5.4% Firing shrinkage (1220ºC): 10.3% Porosity (water absorption at 1220ºC): 0.0% Dry bending strength: 3.1 N/mm2 Fired bending strength (1220ºC): 39.8 N/mm2 Thermal coefficient (25-500ºC): 54.3x10^-7ºC^-1