WC-391

A pliable clay with smooth grog and color from manganese and iron. Contains manganese so, a kiln vent should be used during the firing. 

Characteristics:
Cone: 5
Wet Color: Red/Brown
Fire Color
                Oxidation: Brown/Black
Texture: Slightly Coarse
Average Shrinkage 2±%: 10,0%
Average Water Absorption 1±%: 3,0%
COE x 10-6: 7,275

* Protect from freezing.