KT #1-4 Ball Clay
Alternate Names: KT1-4, KT#1-4
Description: Tennessee Ball Clay, KT 1-4
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.20% | 0.01 | |
| K2O | 1.40% | 0.06 | |
| MgO | 0.50% | 0.05 | |
| Na2O | 0.20% | 0.01 | |
| TiO2 | 1.90% | 0.09 | |
| Al2O3 | 25.80% | 1.00 | |
| SiO2 | 60.50% | 3.98 | |
| Fe2O3 | 1.00% | 0.02 | |
| LOI | 8.70% | n/a | |
| Oxide Weight | 361.74 | ||
| Formula Weight | 396.21 | ||
Notes
A coarse-grained, fast casting Ball Clay used in all types of casting applications, but primarily used in artware. It is a blend containing mostly SGP#1 and some OM#4. It is blended to specification (thus the blend is adjusted as the constituents vary to maintain physical properties). KT1-4 is slightly less plastic than CDI blend, but more plastic and thus less sensitive to deflocculants than SGP.
Physical Properties
===================
Water of Plasticity: 31.8%
Dry Shrinkage: 5.2%
pH: 4.2
Dry M.O.R. (50:50 ball clay:silica, psi): 463
M.B.I. (meq/100g): 6.2
Specific Surface Area (sq-metre/g): 18
Soluble sulfur SO4: Low
P.C.E.: 31
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
(% finer than) 94% 87% 74% 59% 47% 35% 25%
Fired Properties
================
Cone 5 10
Total Shrinkage: 11.3% 14.2%
Absorption: 12.1% 4.9%
Shipped from Mayfield, KY
*This info is from a data sheet from Jan 2013
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. |
| Materials |
Spinks Blend Ball
|
Data
| Drying Shrinkage | 6.5% |
|---|---|
| Modulus of Rupture - Dry | 825 psi |
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