Martin #5 Ball Clay
Alternate Names: Martin#5, Wade Martin Ball Clay
Description: Tennessee Ball Clay
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.30% | 0.02 | |
| K2O | 1.00% | 0.04 | |
| MgO | 0.40% | 0.04 | |
| Na2O | 0.30% | 0.02 | |
| TiO2 | 1.20% | 0.05 | |
| Al2O3 | 27.90% | 1.00 | |
| SiO2 | 55.20% | 3.36 | |
| Fe2O3 | 1.10% | 0.03 | |
| LOI | 12.60% | n/a | |
| Oxide Weight | 319.53 | ||
| Formula Weight | 365.59 | ||
Notes
A coarse-grained, fast casting ball clay used exclusively in casting bodies. Applications include sanitaryware, artware and dinnerware.
Shipped from Whitlock, TN
Water of Plasticity: 28.0%
% Dry Shrinkage: 4.5
Dry M.O.R., psi:* 420
pH: 5.0
C.E.C., meq/100g: 5.5
Soluble sulfur:** Low
Cone 5 10
----
Total Shrinkage: 9.5% 11.0%
Absorption: 12.5% 5.5%
P.C.E.: 31
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
90% 82% 73% 56% 43% 30% 15%
*Modulus of Rupture Specimens: De-aired, extruded, 50% ball clay, 50% flint
**Low-trace to 150, Med-150-400, High-450+
Related Information
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| 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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