BLACK ICE Porcelain Clay 11lb (Cone 6 - 7)

Black Porcelain

Black Ice is black porcelain body noted for its beautiful black graphite fired color. It has high plasticity, which makes it ideal for wheel-throwing and modeling. Its formula is very stable and provides a secure firing range between Cone 6 and Cone 7 (oxidizing atmosphere). Suitable for tableware (food-safe), according to ISO 6486. Available in extruded body (moist form). Supplied in a practical 5 kg cylindrical format with double packaging.

Firing range: Cone 6-7 (2269º-2295ºF)
Biscuit: Cone 06 (1855ºF)
Water content: 20%
Plasticity (IP Atterberg): 11
Carbonate content (CaCO3): 0%
Drying shrinkage: 5.4%
Firing shrinkage at Cone 6: 10.3%
Porosity (water absorption) at Cone 6: 0.0%
Dry bending strength: 3.1 N/mm2
Fired bending strength at Cone 6: 39.8 N/mm2
Thermal coefficient (a25-500ºC): 54.3x10-7ºC-1