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Ensinger PEI

Old Hickory TI-21 Tennessee Ball Clay  (discontinued **)
Categories: Ceramic; Clay; Ball Clay

Material Notes: TI-21 is a very low carbon content clay specifically designed for plastic forming methods. It has excellent oxidation qualities particularly for dense volume stoneware or vitreous ceramic pieces. The excellent plasticity provides outstanding jigger, ram pressing or hand throwing qualities to the formulation. The Fe2O3 and TiO2 content produces a cream white fired color for enhancing a stoneware appearance to the formula.

Information provided by Old Hickory Clay Company

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Physical PropertiesMetricEnglishComments
Particle Size 0.44 µm0.44 µmMedian particle diameter
 0.50 µm0.50 µm55% of particles less than
 1.0 µm1.0 µm65% of particles less than
 <= 5.0 µm<= 5.0 µm84% of particles less than
pH 6.36.3
Soluble Sulfates 200 ppm200 ppm
Specific Surface Area 21.7 m²/g21.7 m²/g
 
Mechanical PropertiesMetricEnglishComments
Modulus of Rupture 0.00355 GPa0.515 ksiDry Modulus of Rupture, 50% clay/50% flint, cast bars
 
Thermal PropertiesMetricEnglishComments
Shrinkage 5.2 %5.2 %Cone 04, Linear Fired Shrinkage
 6.4 %6.4 %Cone 3, Linear Fired Shrinkage
 7.0 %7.0 %Linear Drying Shrinkage
 8.1 %8.1 %Cone 11, Linear Fired Shrinkage
 
Component Elements PropertiesMetricEnglishComments
Al2O3 27.94 %27.94 %
CaO 0.090 %0.090 %
Fe2O3 1.07 %1.07 %
K2O 0.34 %0.34 %
Loss on Ignition(%) 9.56 %9.56 %
MgO 0.24 %0.24 %
Na2O 0.060 %0.060 %
SiO2 58.52 %58.52 %
TiO2 2.14 %2.14 %
 
Descriptive Properties
Absorption (%)10.6Cone 3, Fired
 15.5Cone 04, Fired
 3.8Cone 11, Fired
CEC/MBI (meg/100 ml)8.3
Crude ColorLight Grey
Filtration (ml)26
Pyrometric Cone Equivalent (PCE)29-31
Water of Plasticity (%)35
Wet Sieve Residue (%)0.69Wet Sieve Residue, +200 mesh

**
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