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Foundry Hill Creme

Plastic clay for stoneware clay bodies

Alternate Names: New Foundry Hill Creme, Foundry Hill Cream, Foundary Hill Cream

Oxide Weight453.48
Formula Weight494.47
If this formula is not unified correctly please contact us.
PCE - Pyrometric Cone Equivalent 31

Similar to a ball clay but having a lower drying shrinkage (about 6-6.5%). Although this is a fairly refractory clay, it has a high firing shrinkage, around 8% across the entire range from cone 7 to 11. Porosity drops slowly from cone 7 upward (7% down to 4% at cone 11 oxidation and 10 reduction). Used commonly in stoneware clay bodies.

The manufacturer states: An intermediate-grained engineered blend offering excellent moisture retention and plasticity properties. Ideally suited for a wide variety of stoneware applications and wet forming process.

Relative Viscosity (1.2 Sp. Gr.):* 1.28
Casting Rate: (gms per 15 min/426 cm2):* 209
Water of Plasticity:* 22.9
% Dry Shrinkage:* 3.94
Dry M.O.R., psi:* 239

Cone 04 8 11
Fired Shrinkage:* 0.2% 1.6% 1.9%
Absorption:* 20.2% 17.8% 15.2%
M.O.R. psi:* 758 2390 4630

Thermal Expansion, Cone 8: .493% at 700C
P.C.E.: 30
pH: 5.9
Oil Absorption: 28
Bulk Density, lbs per cubic foot: 37-45
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
88% 73% 60% 44% 33% 21% 8%

*Specimens: De-aired, extruded, 50% ball clay, 50% flint

Jim Robinson observes that this material holds all the glazes in his GTS series without shivering, 'probably because cristobalite is not able to form'.

Original Container bag of Foundry Hill Cream clay

Original Container bag of Foundry Hill Cream clay

Foundry Hill Creme fired test bars

Foundry Hill Creme fired test bars

Top: Cone 10R (soluble salts are staining the surface). Downward: Cone 11-7 oxidation. These look very similar to a typical ball clay, perhaps not firing quite as white.

Out Bound Links

In Bound Links

By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Foundry Hill Creme" descrip="Plastic clay for stoneware clay bodies" searchkey="New Foundry Hill Creme, Foundry Hill Cream, Foundary Hill Cream" loi="0.00" casnumber="70694-09-6"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.500" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.500" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="0.700" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.550" tolerance=""/> <oxide symbol="P2O5" name="Phosphorus Pentoxide" status="" percent="0.090" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.500" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="20.500" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="66.200" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.600" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="8.200" tolerance=""/> <volatile symbol="SO3" name="Sulfur Trioxide" percent="0.090" tolerance=""/> </volatiles> </material>

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