PRNM - Black Stoneware Clay with Impalpable Grog Sio-2

Black refractory paste with 40% medium 0-1.5mm shroud. Designed for artistic ceramics, it is ideal for large sculpture and murals. 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; Cake temperature: 1000 °C; Humidity: 21%; Plasticity (PI Atterberg): 22; Calcimetry (CaCO3): 0%; Drying contraction: 7.0%; Cooking contraction (1260 °C): 3.6%; Porosity (water absorption 1260 °C): 9.8%; Dry mechanical strength: 2.0 N / mm2; Mechanical strength Cooked (1260 °C): 22.0 N / mm2;Expansion coefficient (a25-500 ° C): 50.3x10^-7ºC^-1.