Grey stoneware clay with 40% impalpable grog 0-0.2 mm (up to 80 Mesh).
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.
Depending on the firing temperature, it develops an interesting range of greys, from cement to dark grey, which satisfies the most avant-garde trends in artistic ceramics. Suitable for tableware (food-safe), according to ISO 6486. Available in extruded body (moist form).
Technical Specifications:
Firing range: 1200-1300ºC / Cone 5-10
Biscuit temperature: 1000ºC / Cone 06
Water content: 19%
Plasticity (IP Atterberg): 16
Carbonate content (CaCO3): 0%
Drying shrinkage: 5.7%
Firing shrinkage 1300ºC: 6.4%
Porosity (water absorption) at 1300ºC: 0.1%
Dry bending strength: 2.9 N/mm2
Fired bending strength 1300ºC: 53.2 N/mm2
Thermal coefficient 1250ºC (25-500ºC): 60.1x10^-7ºC^-1