PRGM Golden Brown Sculpture/Raku with Coarse Grog 0-1.5mm (Cone 6-10) 12.5kg

Golden brown stoneware clay creates a great toasty finish. It has been developed with 40% coarse grog 0-1.5 mm (up to 12 Mesh).

The high content of grog provides a rough and rugged textured finish as well as additional strength and resilient characteristics during drying and firing.

Formulated for artistic ceramics, it is suitable for large sculpture and raku work, could also be used for wheel-throwing by the courageous!

It has amazing fired colour, with different tones of golden brown, highlighting reliefs and edges, you can really experiment and be expressive with this clay body.

Technical Specifications:

Firing range*: 1240-1300ºC / Cone 6-10
Biscuit temperature: 1000ºC
Water content: 21%
Plasticity (IP Atterberg): 19
Carbonate content (CaCO3): 0%
Drying shrinkage: 6.8%
Firing shrinkage 1300ºC: 5.7%
Porosity (water absorption) 1300ºC: 8.7%
Dry bending strength: 2.7 N/mm2
Fired bending strength 1300ºC: 19.3 N/mm2
Thermal coefficient 1250ºC (25-500ºC): 71.0x10^-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.