Speckled stoneware clay with impalpable grog 0-0.2mm. Grog this fine can't be felt, the clay feel is as smooth as butter.
Designed for artistic ceramics, it contains melting minerals that develop a seductive surface with dark spots of different sizes and shades that stand out in an ivory-white matrix.
Its high grog content provides excellent behaviour during drying and firing. Decoration with transparent glazes is ideal to enhance the vividness of the speckled effect. Available in an extruded body.
Technical Specifications:
Firing range: 1200-1270ºC / Cone 5-8
Biscuit temperature: 1230ºC / Cone 06
Water content: 19%
Plasticity (IP Atterberg): 14
Carbonate content (CaCO3): 0%
Drying shrinkage: 5.8%
Firing shrinkage 1270ºC: 5.3%
Porosity (water absorption) 1270ºC: 0.0%
Dry bending strength: 2.7 N/mm2
Fired bending strength 1270ºC: 29.2 N/mm2
Thermal coefficient 1230ºC (25-500ºC): 61.1x10^-7ºC^-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 150ºC/hr heating rate.