Bell Dark Ball Clay
Description: Tennessee Ball Clay
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.20% | 0.01 | |
| K2O | 0.70% | 0.03 | |
| MgO | 0.40% | 0.04 | |
| Na2O | 0.20% | 0.01 | |
| TiO2 | 2.10% | 0.10 | |
| Al2O3 | 26.80% | 1.00 | |
| SiO2 | 58.90% | 3.73 | |
| Fe2O3 | 1.10% | 0.03 | |
| LOI | 10.30% | n/a | |
| Oxide Weight | 344.06 | ||
| Formula Weight | 383.57 | ||
Notes
A very plastic ball clay used in industrial and hobby clay bodies of all types. Primary applications are dinnerware and artware.
Physical Properties
===================
Water of Plasticity: 33.5%
% Dry Shrinkage: 6.1
Dry M.O.R. (50:50 ball clay:silica) psi:* 560
pH: 4.1
M.B.I. meq/100g: 8.0
Specific Surface Area (sq-metre/g): 24.1
Soluble sulfur+: Low
P.C.E.: 38
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
(% finer than) 99% 94% 85% 75% 63% 52% 38%
Fired Properties
================
Cone 5 10
----
Total Shrinkage: 12.7% 15.6%
Absorption: 12.5% 6.1%
------------------
*Extruded, 50% ball clay, 50% flint
+Low-trace to 150, Med-150-400, High-450+
**50% Clay, 50% Nepheline Syenite
*This information is from a data sheet dated Jan 2013.
Related Information
Links
| Materials |
Ball Clay
A fine particled highly plastic secondary clay used mainly to impart plasticity to clay and porcelain bodies and to suspend glaze, slips and engobe slurries. |
| Typecodes |
Ball Clay
Ball clays are abundant and very plastic and are used in all types of plastic forming bodies. They are not as white-burning or refractory as kaolins but lower in iron and fluxes than bentonites. |
Data
| Dry M.O.R. (50% Silica) | 1482C |
|---|
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