High fire black body with 40% coarse grog 0-1.5 mm. Formulated for artistic ceramics, it is ideal for large sculpturak works and murals. The high content of grog confers a beautiful rugged texture and 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. Available in extruded body (moist form).
Firing range: 1200-1260ºC
Biscuit temperature: 1000ºC
Water content: 21%
Plasticity (IP Atterberg): 22
Carbonate content (CaCO3): 0%
Drying shrinkage: 7.0%
Firing shrinkage (1260ºC): 3.6%
Porosity (water absorption at 1260ºC): 9.8%
Dry bending strength: 2.0 N/mm2
Fired bending strength (1260ºC): 22.0 N/mm2
Thermal coefficient (25-500ºC): 50.3x10^-7ºC^-1
Supply: packages 12.5 kg
For other stiffness, packing or supply, please ask.
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