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PA White Earthenware Clay 27.6lb (Cone 05 - 03)

PA White Earthenware Clay 27.6lb (Cone 05 - 03)

Regular price $26.99 USD
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White Earthenware Clay

White earthenware clay body especially formulated for wheel-throwing and modeling. 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 earthenware clays. Its coefficients of thermal expansion are ideal for standard pottery glazes, in both single and twice firing processes. Available in extruded body (moist form), being suitable for wheel-throwing, shaping and modeling.

Firing range (biscuit): Cone 05-03 (1911º-2019ºF)
Water content: 20%
Plasticity (IP Atterberg): 16
Carbonate content (CaCO3): 17%
Drying shrinkage: 6.8%
Firing shrinkage at Cone 04: -0.4%
Porosity (water absorption) at Cone 04: 12.3%
Dry bending strength: 5.1 N/mm2
Fired bending strength at Cone 04: 27.8 N/mm2
Thermal coefficient (a25-500ºC): 79.1x10-7ºC-1

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