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Prestige AK

Alternate Names: Prestige Ball Clay

Oxide Analysis Formula
SiO2 51.50% 2.77
Al2O3 31.50% 1.00
TiO2 1.00% 0.04
Fe2O3 1.10% 0.02
CaO 0.10% 0.01
MgO 0.30% 0.02
K2O 1.90% 0.07
Na2O 0.30% 0.02
LOI1.90%
Oxide Weight 283.98
Formula Weight 322.71

Notes

A composite blend clay specially formulated for porous earthenware. Suitable also for many engobe recipes.

Related Information

Links

Minerals Kaolinite
Minerals Quartz
Minerals Potash Mica
Minerals Soda Mica
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

Sieve Analysis Wet0.3% residue on 125 µm screen
Co-efficient of Linear Expansion49 x 10-7 (25C-500C prefired at 1200C)
Ultimate Particle Size Distribution1 micron: 73% underside 2 microns: 81% 5 microns: 92% 10 microns: 95% 20 microns: 98%
Modulus of Rupture - Fired63.2 kgf/cm2

By Tony Hansen


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