Spinks Special Clay
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.22% | 0.01 | |
| K2O | 0.28% | 0.01 | |
| MgO | 0.27% | 0.03 | |
| Na2O | 0.14% | 0.01 | |
| TiO2 | 1.52% | 0.07 | |
| Al2O3 | 27.17% | 1.00 | |
| P2O5 | 0.11% | - | |
| SiO2 | 59.16% | 3.70 | |
| Fe2O3 | 1.15% | 0.03 | |
| MnO | 0.02% | - | |
| LOI | 10.16% | n/a | |
| SO3 | 0.02% | n/a | |
| Oxide Weight | 338.02 | ||
| Formula Weight | 376.33 | ||
Notes
Relative Viscosity (1.2 Sp. Gr.):* 1.27
Casting Rate: (gms per 15 min/426 cm2):* 158
Water of Plasticity:* 17.07
% Dry Shrinkage:* 4.9
Dry M.O.R., psi:* 593
Cone 04 8 11
----
Fired Shrinkage:* 0.1% 1.3% 1.2%
Absorption:* 15.9% 13.6% 13.4%
M.O.R. psi:* 1427 3901 3970
Thermal Expansion, Cone 8: .397% at 700C
P.C.E.: 32
pH: 4.8
Oil Absorption: 35
Bulk Density, lbs per cubic foot: 34-39
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
96% 92% 82% 64% 47% 29% 7%
*Specimens: De-aired, extruded, 50% ball clay, 50% flint
Related Information
Links
| 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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