SIO-2® PM - Black Earthenware Clay, Low Fire, 27.6 lb (12.5 kg)

SIO-2® PM - Black Earthenware Clay, Low Fire, 27.6 lb (12.5 kg)

Black manganese earthenware body. Its black colour in oxidising atmosphere is a highlight in the range of low firing colours. Its fineness and plasticity make it an excellent choice for throwing and modelling. Very good behaviour with standard pottery glazes. Available in extruded body (moist form) in a wide range of water content depending on the shaping application: wheel-throwing, modelling and shaping procesess.

DETAILED INFORMATION:

Firing range: 970-1025ºC
Water content (throwing): 21%
Plasticity (IP Atterberg): 16
Carbonate content (CaCO3): 8%
Drying shrinkage: 5.0%
Firing shrinkage (1000ºC): 0.9%
Porosity (water absorption at 1000ºC): 14.3%
Dry bending strength: 4.5 N/mm2
Fired bending strength (1000ºC): 28.9 N/mm2
Thermal coefficient (25-500ºC): 77.9x10^-7ºC^-1