PA White Earthernware Clay (Cone 05-03) 12.5kg


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White earthernware clay that has been formulated specifically for wheel-throwing and modelling.

It is a high quality and polyvalent clay, very popular for its fineness and plasticity. Its balanced calcium carbonate content confers higher stability than traditional white earthernware clays.

Its coefficients of thermal expansion are ideal for standard pottery glazes, in both single and double firing processes. Available in extruded body (moist-form), being suitable for wheel-throwing, shaping and modelling.


Technical Specifications:

Firing range (biscuit): 1050-1080ºC / Cone 05-03
Water content (throwing): 20%
Plasticity (IP Atterberg): 15
Carbonate content (CaCO3): 17%
Drying shrinkage: 6.2%
Firing shrinkage 1050ºC: -0.2%
Porosity (water absorption) 1050ºC: 12.6%
Dry bending strength: 5.1 N/mm2
Fired bending strength 1050ºC: 27.8 N/mm2
Thermal coefficient 1050ºC (25-500ºC): 74.5x10^-7ºC^-1