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Old Hickory No. 2 Ball Clay
Description: Legacy ball clay
| Oxide | Analysis | Formula | |
|---|---|---|---|
| SiO2 | 51.60% | 2.60 | |
| Al2O3 | 33.70% | 1.00 | |
| Fe2O3 | 0.80% | 0.02 | |
| TiO2 | 1.30% | 0.05 | |
| CaO | 0.10% | 0.01 | |
| MgO | 0.20% | 0.02 | |
| K2O | 0.20% | 0.01 | |
| Na2O | 0.10% | - | |
| LOI | 11.00% | n/a | |
| Oxide Weight | 266.35 | ||
| Formula Weight | 299.27 | ||
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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
| % < 0.5 microns | 43% |
|---|---|
| Drying Shrinkage | 7.6% |
| Firing Shrinkage | Cone 9: 6.0% |
| Water absorption | Cone 9: 7.8% |
| Dry M.O.R. (50% Silica) | 380 psi |
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