Semi-vitreous, utilitarian, plastic, semi-vitrified, very popular, fired to medium temperature.
Characteristics: Cone: 4-7
Wet Color: Gray
Fired Color
Oxydation: Pale Chamois
Texture: Very Slightly Rough
Average Shrinkage Rate
Cone 4 Oxidation: 4.0-5.0%
Cone 7: 5.5-6.5%
Average Absorption Rate
Cone 4 Oxidation: 4.0-5.5%
Cone 7: 1.0-2.0%
COE x 10-6: N/A
* Protect from freezing.