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Description: Tennessee Ball Clay
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.20% | 0.01 | |
| K2O | 1.50% | 0.06 | |
| MgO | 0.30% | 0.03 | |
| Na2O | 0.20% | 0.01 | |
| TiO2 | 1.80% | 0.08 | |
| Al2O3 | 27.90% | 1.00 | |
| SiO2 | 57.10% | 3.47 | |
| Fe2O3 | 1.00% | 0.02 | |
| LOI | 10.00% | n/a | |
| C | 0.80% | n/a | |
| Oxide Weight | 329.03 | ||
| Formula Weight | 368.87 | ||
Particle Size (e.s.d.)
125 microns - 0.1
20 microns - 95
2 microns - 67
.5 microns - 44
Modulus of Rupture at 110C
Mn/M2 - 6.0
lbf/in2 - 870
Water Absorption
1120C - 13.0
1220C - 3.5
Shrinkage Dry to Fired
1120C - 8.0
1220C - 12.5
Refractoriness
Cone - 32, 1710C
| 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. |
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