•The secret to cool bodies and glazes is a lot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com

Sign-up at https://insight-live.com today.

Black Charm Clay

Ball Clay

Alternate Names: Ball Charm Ball Clay

Oxide Weight403.50
Formula Weight451.49
If this formula is not unified correctly please contact us.
PCE - Pyrometric Cone Equivalent 29

A coarse-grained engineered blend offering a high degree of moisture retention, plasticity, and naturally occurring organics. Ideally suited for a variety of bonding applications.

Relative Viscosity (1.2 Sp. Gr.):* 1.23
Casting Rate: (gms per 15 min/426 cm2):* 165
Water of Plasticity:* 26.4
% Dry Shrinkage:* 5.55
Dry M.O.R., psi:* 496

Cone 04 8 11
Fired Shrinkage:* 0.4% 1.5% 2.5%
Absorption:* 21.0% 18.3% 14.8%
M.O.R. psi:* 620 1830 4050

Thermal Expansion, Cone 8: .495% at 700C
P.C.E.: 29
pH: 4.6
Oil Absorption: 32
Bulk Density, lbs per cubic foot: 35-39
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
92% 81% 65% 45% 31% 16% 5%

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

Out Bound Links

By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Black Charm Clay" descrip="Ball Clay" searchkey="Ball Charm Ball Clay" loi="0.00" casnumber="70694-09-6"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.330" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.210" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="1.340" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.320" tolerance=""/> <oxide symbol="P2O5" name="Phosphorus Pentoxide" status="" percent="0.040" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.200" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="22.660" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="62.960" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.530" tolerance=""/> <oxide symbol="MnO" name="Manganous Oxide" status="" percent="0.050" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="10.520" tolerance=""/> <volatile symbol="SO3" name="Sulfur Trioxide" percent="0.110" tolerance=""/> </volatiles> </material>

Feedback, Suggestions

Your email address


Your Name


Copyright 2003, 2008, 2015 https://digitalfire.com, All Rights Reserved