Sio-2 PRAI White Stoneware

Sio-2 PRAI White Stoneware Clay
Sold in 27.5lb bags

White stoneware clay with 40% impalpable 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 particular ivory colour after firing is much appreciated and provides an excellent ware for glazes and colouring oxides, which develop bright and intense tones. Suitable for tableware (food-safe), according to ISO 6486. Available in extruded body (moist form).

Firing - Ceramic kiln high fire
Weight/Volume - 27.5 lbs - 12,5 kg
Grog - Impalpable grog
State - Moist form (plastic body)
Stiffness - For wheel throwing and handbuilding

Firing range: Cone 6-10 (2264º-2372ºF / 1240-1300ºC)
Bisque firing temperature: Cone 06 (1832ºF / 1000ºC)
Water content: 19%
Plasticity (IP Atterberg): 16
Carbonate content (CaCO3): 0%
Drying shrinkage: 5.9%
Firing shrinkage at Cone 10 (2372ºF / 1300ºC): 7.0%
Porosity (water absorption at Cone 10 (2372ºF / 1300ºC)): 0.0%
Dry bending strength: 3.0 N/mm2
Fired bending strength (2372ºF / 1300ºC): 45.3 N/mm2
Thermal coefficient (77-932ºF / 25-500ºC): 52.6x10^-7ºC^-1
Film-wrapped pack + carton box 27.5 lb (12.5 kg)