White sculpture/raku clay with 40% fine grog 0-0.5 mm (up to 35 Mesh). Formulated for artistic ceramics, it is ideal for sculpture, murals and Raku pieces. The high content of grog confers a beautiful textured surface and 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. It is also known as “Rafael” clay, and it is very popular because of its excellent behaviour for Raku. Available in extruded body (moist form).
Firing range*: 1240-1300ºC / Cone 6-10
Biscuit temperature: 1000ºC / Cone 06
Water content: 17%
Plasticity (IP Atterberg): 16
Carbonate content (CaCO3): 0%
Drying shrinkage: 5.4%
Firing shrinkage 1300ºC: 4.6%
Porosity (water absorption) at 1300ºC: 4.1%
Dry bending strength: 2.4 N/mm2
Fired bending strength 1300ºC: 33.5 N/mm2
Thermal coefficient 1250ºC (25-500ºC): 59.8x10^-7ºC^-1Available in the United States and Canada. ACMI AP Seal. Conforms to ASTM D-4236.
*Please note: Clay purchases are for Beyond Pottery Members only. *
SIO2-White Sculpture/Raku Clay (PRAF)
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