Formulated for reduction firing, Standard Ceramic No. 205 High Fire Clay is suitable for throwing and hand-building. It contains fine grog to aid in uniform drying.
No. 205 High Fire Clay fires to a muted brick red color at cone 6 and stone gray at cone 10. Shrinkage at cone 6 is 11.5%, and 12.5% at cone 10. Absorption at cone 6 is 3.0%, and 1.5% at cone 10.