White stoneware which is good for functional ware, slab work and tile. Substitutes sand for grog and fires slightly gray in reduction. 

WC620, #580

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  • Characteristics Cone: 10 Wet Color: Gray Fire Color Oxidation: White Reduction: Gray Texture: Slightly Coarse Consistency: Standard Avg. Shrinkage 2±% 14.3% Avg. Water Absorption 1±% 1.9% COE x 10-6: 5.02