Martin #5 Ball Clay

Alternate Names: Martin#5, Wade Martin Ball Clay

Description: Tennessee Ball Clay

Oxide	Analysis	Formula
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.

By Tony Hansen
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