SIO-2® PF - Red Earthenware Clay, Low Fire, 27.6 lb

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

27.6 lb (12.5 kg)

PF is a traditional red earthenware clay body, suitable for wheel-throwing, shaping, and modeling. It is a 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).

It is available in extruded body (moist form), in a 27.6 lb. package.  

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*: 970-1055ºC / Cone 07-04
Water content (throwing): 22%
Plasticity (IP Atterberg): 17
Carbonate content (CaCO3): 10%
Drying shrinkage: 5.5%
Firing shrinkage 1000ºC / 1832ºF: 0.6%
Porosity (water absorption) 1000ºC / 1832ºF: 13.5%
Dry bending strength: 6.6 N/mm2
Fired bending strength 1000ºC / 1832ºF: 27.9 N/mm2
Thermal coefficient 1000ºC (25-500ºC): 77.7x10^-7ºC^-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.

FAQ for PF clay, with answers provided by SIO-2®

I purchased your SIO-2® PF clay. It was fired at 05 bisque. Can I fire it at 05 for glazing? Or do you suggest something different?
Firing range for PF is Cone 07-04. That’s ideally for bisque and also for glazing. However, the suitable glaze firing temperature is indicated on the label of the glaze used. In other words, follow the glaze instructions and just be sure to use a low-fire glaze (04 maximum cone).

Click here to download our Fact Sheet for PF 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

Do you need a large amount of clay?

We offer custom pricing and shipping options for our SIO-2 clay products in bulk quantities. Submit a quote request today to our sales team.

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To learn more about our SIO-2 Clay products, click here to take a look at our catalog.