Vulcan Black Stoneware (Course) 1200-1260C

Vulcan Black Stoneware (Course) 1200-1260C

Vulcan™ Black Stoneware (Course) 164-VUM  |  Recommended firing 1200-1260C / Cone 5-7

Vulcan Black Stoneware is unlike any other on the market, providing an unusual intense brown-black colour when fired in an oxidising atmosphere. In a reducing atmosphere a metallic finish with shades of blue are obtained. Containing a coarse grog (up to 12 mesh) Vulcan Black Stoneware Coarse has been formulated especially for artistic ceramics. It behaves excellently during drying/firing and its high plasticity makes it ideal for modelling. It is widely used for murals and sculpture and is ideal for larger scale handbuilding. Supplied in a 12.5kg bag.

Typical Data:

• Firing range: 1200-1260ºC / Cone 5-7
• Biscuit temperature: 1000ºC
• Texture 8-9 on our indicative texture scale, smooth1, coarse 10.
• Water content: 21%
• Plasticity (IP Atterberg): 22
• Carbonate content (CaCO3): 0%
• Drying shrinkage: 7.0%
• Firing shrinkage (1260ºC): 3.6%
• Porosity (water absorption at 1260ºC): 9.8%
• Dry bending strength: 2.0 N/mm2
• Fired bending strength (1260ºC): 22.0 N/mm2
• Thermal coefficient (25-500ºC): 50.3x10^-7ºC^-1