Champion-Challenger

Alternate Names: Champion Challenger Ball Clay, Chalenger

Description: 1/2 Champion, 1/2 Challenger

Oxide	Analysis	Formula
CaO	0.37%	0.02
K2O	0.40%	0.02
MgO	0.30%	0.03
Na2O	0.12%	0.01
TiO2	1.64%	0.07
Al2O3	28.38%	1.00
P2O5	0.15%	-
SiO2	55.60%	3.32
Fe2O3	0.98%	0.02
MnO	0.02%	-
LOI	12.30%	n/a
SO3	0.03%	n/a
Oxide Weight		316.14
Formula Weight		360.60

Notes

Relative Viscosity (1.2 Sp. Gr.):* 1.53
Casting Rate: (gms per 15 min/426 cm2):* 177
Water of Plasticity:* 23.6
% Dry Shrinkage:* 5.86
Dry M.O.R., psi:* 700

Cone 04 8 11
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Fired Shrinkage:* 0.3% 2.1% 2.5%
Absorption:* 18.7% 15.5% 15.1%
M.O.R. psi:* 1720 4100 3860

Thermal Expansion, Cone 8: 0.51% at 700C
P.C.E.: 33
pH: 5.5
Oil Absorption: 38
Bulk Density, lbs per cubic foot: 33-38
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
97% 94% 86% 75% 64% 47% 16%

*Specimens: De-aired, extruded, 50% ball clay, 50% flint

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	Champion Ball Clay

Data

Pyrometric Cone Equivalent	33

By Tony Hansen
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