A pliable clay with smooth grog and color from manganese and iron. Fires almost black when reduced and dark brown/black in oxidation.

WC391, B3 Brown

Price Rate: How many boxes are you buying?
  • Characteristics Cone: 5 Wet Color: Red/Brown Fire Color Oxidation: Brown/Black Reduction: Black Texture: Slightly Coarse Penetrometer Target: 6.75 Avg. Shrinkage 2±%: 10% Avg. Water Absorption 1±%: 3% COE x 10-6: 7.275

Core Clay


3846 Montgomery Road

Norwood, OH 45212

Hours of Operation: 

Monday-Thursday 10:00am-9:00pm

Friday 10:00am-5:00pm

Closed Saturday & Sunday

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