PRNF - Black Stoneware Clay with Impalpable Grog Sio-2

Black refractory paste with 40% 0-0 shroud, 0,5mm impalpable. Designed for artistic ceramics, it is ideal for transforming and modeling pieces with fine details and smooth surface. The high chamote content gives character to the ceramic part and provides excellent behavior during drying and cooking. The intense black color of the oxidizing firing of the PRN range is very original and appreciated, making it an ideal medium for artistic expression. In a reduced atmosphere excellent metallization effects are obtained and beautiful blue tones are obtained. Available in paste, extruded plastic. Cooking temperature: 1200-1260 ° C; Biscuit temperature: 1000 ° C; Water content: 21%; Plasticity (IP Atterberg): 22; Carbonate content (CaCO3): 0%; Drying shrinkage: 7.0%; Firing shrinkage (1260ºC): 4.5%; Porosity (water absorption at 1260ºC): 9.4%; Dry bending strength: 2.0 N/mm2; Fired bending strength (1260ºC): 27.5 N/mm2; Thermal coefficient (25-500ºC): 55.8x10^-7ºC^-1.