BLACK BODYCLAY PNM – 12.5 KG.

Black earthenware ceramic clay with manganese, in a rectangular block. Ideal for handbuilding or the potter’s wheel. Soft hardness. Color may vary with the firing atmosphere: dark brown to black in oxidation. The clay should be well sealed when not in use. 12.5 kg package. Technical data sheet available for download.

– Dry mechanical strength: 65±10 kgf/cm²
– Fired mechanical strength: 525±50 kgf/cm²
– Total shrinkage: 10.5±1.5 %
– Water absorption: 3.0±1.0 %
– Cubic thermal expansion coefficient (ΔT20–400 °C): (215 ± 5) × 10^-7 °C^-1
– Bisque temperature: 980 °C (±10 °C)
– Glaze firing temperature: 1020 °C (±10 °C)