Onyx Black Porcelain takes on a beautiful black/graphite colour when fired as recommended to the upper part of its firing range. It is highly plastic making it ideal for wheel-throwing and modelling alike. Suitable for tableware. Supplied in a 5kg pack.
 

• Firing range: Cone 6-7 (1230-1246°C)
• Bisque: Cone 06 (1000°C)
• Water content: 20%
• Plasticity (IP Atterberg): 11
• Carbonate content (CaCO3): 0%
• Drying shrinkage: 5.4%
• Firing shrinkage at Cone 6: 10.3%
• Porosity (water absorption) at Cone 6: 0.0%
• Dry bending strength: 3.1 N/mm2
• Fired bending strength at Cone 6: 39.8 N/mm2
• Thermal coefficient (a25-500ºC): 54.3x10-7ºC-1"
   

We endeavour to despatch pallet and courier/post orders received by 11am the same day, stocks allowing.  At extremely busy times when receiving a high volume of orders, this may not be possible.
As we offer a great variety of products, ranging in size and weight we despatch our orders by the most suitable means for each order.  Our web shop offers express and budget delivery options.

Saturday deliveries can be arranged but incur a surcharge.  For this service please call 01243 265845.