High fire black body with 40% impalpable grog 0-0.2 mm. Formulated for artistic ceramics, it is ideal for wheel-throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Its beautiful and intense black firing colour in oxidising atmosphere is very exclusive of PRN range and becomes an ideal artistic mean of expression. In reducing atmosphere, metallic effects with shades of blue are obtained. Suitable for tableware (food-safe), according to ISO 6486:1999. Available in extruded body (moist form).

Firing range: 1200-1240ºC
Biscuit temperature: 1000ºC
Water content: 21%
Plasticity (IP Atterberg): 22
Carbonate content (CaCO3): 0%
Drying shrinkage: 7.0%
Firing shrinkage (1240ºC): 7.1%
Porosity (water absorption at 1240ºC): 1.3%
Dry bending strength: 4.6 N/mm2
Fired bending strength (1240ºC): 33.3 N/mm2
Thermal coefficient (25-500ºC): 51.1x10^-7ºC^-1

Supply: packages 12.5 kg

For other stiffness, packing or supply, please ask.