SIO-2® PT - Terracotta Earthenware Clay, Low Fire, 4 lb Sample

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Traditional terracotta (calcareous) earthenware clay. Its calcium carbonate content (19%) allows displaying an interesting palette of colours, from pink to straw colours, depending on the firing temperature and atmosphere.

Its coefficient of thermal expansion is ideal for standard pottery glazes, in both single and twice firing processes. Its high resistance to frost and environmental degradation make it ideal for pieces exposed outdoors (garden pots, tiles, etc.).

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

This product is eligible for a bulk discount! Buy 4 or more of this product to get 10% off the total price!

Click here to download our Fact Sheet for PT clay!

For larger orders, please contact [email protected].

Availability:: In Stock, Ready to Ship
Product Code:: PTSAMPLE
Brand:: SIO-2®

$8.50

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SIO-2® PF - Red Earthenware Clay, Low Fire

4 lb (1.8 kg) Sample

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

Its coefficient of thermal expansion is ideal for standard pottery glazes, in both single and twice firing processes. Its high resistance to frost and environmental degradation make it ideal for pieces exposed outdoors (garden pots, tiles, etc.).

Traditional terracotta (calcareous) earthenware clay. Its calcium carbonate content (19%) allows displaying an interesting palette of colours, from pink to straw colours, depending on the firing temperature and atmosphere.

This product is eligible for a bulk discount! Buy 4 or more of this product to get 10% off the total price!

DETAILED INFORMATION:

Firing range: 1020-1085ºC / Cone 05½-04
Water content (throwing): 22%
Plasticity (IP Atterberg): 18
Carbonate content (CaCO3): 22%
Drying shrinkage: 7.8%
Firing shrinkage at Cone 06: 0.8%
Porosity at Cone 06: 14.5%
Dry bending strength: 7.9 N/mm2
Fired bending strength at Cone 06: 37.2 N/mm2
Thermal coefficient (α25-500°C): 85.4x10-7°C-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.

Click here to download our Fact Sheet for PT clay!

Are you new to pottery and want to learn more about some common pottery terms? Check out the website for the Donn Zver School of Pottery to find a list of terms and explanations for what they all mean.

School of Pottery