HP71 Hyplas 71 Ball Clay, 1kg

A high siliceous Devon ball clay giving good plasticity with medium strength and useful low iron content. Ball clays are very plastic and fuse relatively easily with greater density than China clay - usually used along with China clay due to high shrinkage levels.

20% Al2O3, 70% SiO2, 0.8% Fe2O3, 2.3% K/Na2O3