SIO-2 PRGI golden brown stoneware 0-0.2mm 12.5kg

Golden brown stoneware clay with 40 % extrafine grog 0-0.2 mm (up to 80 Mesh). Formulated for artistic ceramics, it is ideal for throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Its amazing firing colour, with different tones of golden brown, highlights the relief of the piece, and becomes an ideal artistic mean of expression. Suitable for tableware (food-safe), according to ISO 6486. Available in extruded body (moist form).

Firing range*: 1240-1300 ºC/ Cone 6-11
Biscuit temperature: 1000 ºC
Water content: 21 %
Plasticity (IP Atterberg): 19
Carbonate content (CaCO3): 0 %
Drying shrinkage: 7.2 %
Firing shrinkage 1300 ºC: 5.8 %
Porosity (water absorption) at 1300 ºC: 3.5 %
Dry bending strength: 5.4 N/mm2
Fired bending strength 1300 ºC: 37.7 N/mm2
Thermal coefficient 1250 ºC (25-500 ºC): 67.1x10^-7 ºC^-1

(*) Firing range recommended for the clay to develop its best performance, both in terms of technical and safety characteristics, under conventional firing conditions. The colour samples may show temperatures outside the recommended range to provide a broader view, but these are pieces fired under controlled conditions. Cone equivalence according to Orton table for self-supporting cones, regular-SSB and 60 ºC/hr heating rate.