PF Red Earthernware Clay (Cone 06-04) 12.5kg

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Traditional Red Earthernware clay. It is high quality and polyvalent clay, very popular for its fineness and excellent plasticity.

Its coefficients of thermal expansion are ideal for standard pottery glazes, in both single and twice firing processes.

Incredible results in reducing atmosphere can be obtained (metallic reflection technique).

Available in extruded body (moist form), being suitable for wheel-throwing, shaping and modelling.

Technical Specifications:

Firing range: 970-1055ºC / Cone 06-04
Water content (throwing): 22%
Plasticity (IP Atterberg): 17
Carbonate content (CaCO3): 10%
Drying shrinkage: 5.5%
Firing shrinkage 1000ºC: 0.6%
Porosity (water absorption) 1000ºC: 13.5%
Dry bending strength: 6.6 N/mm2
Fired bending strength 1000ºC: 27.9 N/mm2
Thermal coefficient 1000ºC (25-500ºC): 77.7x10^-7ºC^-1