Tennessee #1 SGP

Alternate Names: SGP #1 Ball Clay

Description: Tennessee Ball Clay

Oxide	Analysis	Formula
CaO	0.20%	0.01
K2O	0.60%	0.02
MgO	0.40%	0.04
Na2O	0.20%	0.01
TiO2	2.00%	0.10
Al2O3	26.80%	1.00
SiO2	58.90%	3.73
Fe2O3	1.10%	0.03
LOI	10.10%	n/a
Oxide Weight		343.30
Formula Weight		381.87

Notes

A coarse-grained fast-casting ball clay with medium plasticity and strength. SGP is an "industry standard" based on its popularity in for casting. It can also be used in plastic formed bodies. It is also widely used as a suspension aid in glazes.

Physical Properties
===================
Water of Plasticity: 33.8%
% Dry Shrinkage: 6.2
Dry M.O.R. (50:50 ball clay:silica, psi): 580
pH: 4.5
M.B.I. (meq/100g): 8.7
Specific Surface Area (sq-meter/g): 24.7
Soluble sulphur SO₄: Low

P.C.E.: 32

Particle Size, Microns: 20 10 5 2 1 0.5
(% finer than) 97% 94% 87% 76% 65% 54%

Fired Properties
================
Cone 5 10
Total Shrinkage: 13.0% 15.9%
Absorption: 12.5% 6.0%

Shipped from Mayfield, KY

*This info is from a data sheet from Jan 2013

Related Information

Links

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.

Data

Pyrometric Cone Equivalent	32

By Tony Hansen
Follow me on

Got a Question?

Buy me a coffee and we can talk