Tennessee #9 Ball Clay

Alternate Names: Tenn #9, Tennessee #9

Description: Tennessee Ball Clay, very light firing ball clay

Oxide	Analysis	Formula
CaO	0.20%	0.01
K2O	1.30%	0.04
MgO	0.30%	0.02
Na2O	0.20%	0.01
TiO2	3.00%	0.12
Al2O3	31.50%	1.00
SiO2	53.20%	2.87
Fe2O3	0.60%	0.01
LOI	10.10%	n/a
Oxide Weight		292.40
Formula Weight		325.25

Notes

Physical Properties
===================
Water of Plasticity: 29.9%
% Dry Shrinkage: 4.7
Dry M.O.R. (50:50 ball clay:silica, psi): 550
pH: 4.1
M.B.I. (meq/100g): 6.5
Specific Surface Area (sq-meter/g): 19.7
Soluble sulphur SO₄: Low

P.C.E.: 33

Particle Size, Microns: 20 10 5 2 1 0.5
(% finer than) 97% 88% 83% 69% 62% 49%

Fired Properties
================
Cone 5 10
Total Shrinkage: 11.0% 13.9%
Absorption: 11.6% 5.8%

*This info is from a data sheet from Jan 2013

Related Information

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Materials	RG1 Ball Clay
Materials	Ball Clay A fine particled highly plastic secondary clay used mainly to impart plasticity to clay and porcelain bodies and to suspend glaze, slips and engobe slurries.
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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