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Starcast Ball Clay

Oxide Analysis Formula
CaO 0.20% 0.01
K2O 0.90% 0.03
MgO 0.20% 0.02
Na2O 0.10% 0.01
TiO2 2.00% 0.09
Al2O3 29.20% 1.00
SiO2 55.90% 3.25
Fe2O3 0.90% 0.02
LOI10.70%
C0.90%
Oxide Weight 312.29
Formula Weight 353.27

Notes

Particle Size (e.s.d.)
125 microns - 0.3
20 microns - 95
2 microns - 70
.5 microns - 51
Modulus of Rupture at 110C
Mn/M2 - 3.9
lbf/in2 - 570
Water Absorption
1120C - 17.0
1220C - 8.0
Shrinkage Dry to Fired
1120C - 5.0
1220C - 11.5
Refractoriness
Cone - 33, 1730C

Related Information

Links

Materials Ball Clay
Suppliers United Clays (WBB)
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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