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PRNI Black Stoneware

$30.00

In stock

Black sculpture clay with 80% fine grog 0-0.5 mm (up to 35 Mesh). Formulated for artistic ceramics, Ideal for wheel throwing and modeling smooth pieces with fine details. The high content of grog confers a excellent behavior during drying and firing. Its beautiful and intense black firing color in oxidizing atmosphere is very exclusive of PRN range and becomes an ideal artistic mean of expression. In reducing atmosphere, metallic effects with shades of blue are obtained. Available in extruded body (moist form).

Comes in 27.5 lb. Bag

firing Details

Manufactures recommendation:
Δ 5-7 1200-1260ºC
Bisque Cone Δ 06 (998ºC)

Shrinkage

Drying shrinkage: 7.0%
Firing shrinkage (1260ºC): 4.5%

Absorption / Other Details

Porosity (water absorption at Δ 6) 1.3%
Water content: 21%
Plasticity (IP Atterberg): 22
Carbonate content (CaCO3): 0%
Dry bending strength: 2.0 N/mm2
Fired bending strength (1260ºC): 27.5 N/mm2
Thermal coefficient (25-500ºC): 55.8x10^-7ºC^-1

Shipping Details

Orders under 200 lbs. Shipped via UPS
Orders Over 200 lbs. Shipped via Freight
We cannot guarantee orders shipped in winter months will not freeze in transit. Shipments may be delayed, or subjected to cancellation due to bad weather in winter months. Late November - April