Sagger XX Ball Clay

Alternate Names: XX Sagger, XX Sagger Ball Clay, Saggar

Oxide	Analysis	Formula
CaO	0.50%	0.03
K2O	0.89%	0.03
MgO	0.30%	0.03
Na2O	0.30%	0.02
TiO2	1.71%	0.07
Al2O3	29.17%	1.00
SiO2	56.73%	3.30
Fe2O3	0.69%	0.02
LOI	9.71%	n/a
Oxide Weight		315.72
Formula Weight		349.67

Notes

A fine grained secondary clay which fires to a light cream with 13% shrinkage at cone 10. This ball clay is considered to be very effective in salt firing and it is claimed that it works well in flashing (i.e. wood firing).

Related Information

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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

Ultimate Particle Size Distribution	20 microns: 99% 10: 97% 8: 94% 5: 88% 3: 79% 2: 73% 1: 60% 0.5: 45%
Pyrometric Cone Equivalent	32.5
Water absorption	Cone 5: 11% cone 10: 3%

By Tony Hansen
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