Old Hickory No. 2 Ball Clay

Description: Legacy ball clay

Oxide	Analysis	Formula
SiO2	51.60%	2.60
Al2O3	33.70%	1.00
Fe2O3	0.80%	0.02
TiO2	1.30%	0.05
CaO	0.10%	0.01
MgO	0.20%	0.02
K2O	0.20%	0.01
Na2O	0.10%	-
LOI	11.00%	n/a
Oxide Weight		266.35
Formula Weight		299.27

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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.

Data

% < 0.5 microns	43%
Drying Shrinkage	7.6%
Firing Shrinkage	Cone 9: 6.0%
Water absorption	Cone 9: 7.8%
Dry M.O.R. (50% Silica)	380 psi

By Tony Hansen
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