Vulcan Black Stoneware Clay Coarse 164-VUC

Vulcan Black Stoneware Clay Coarse 164-VUC

Item: 164-VUC

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Product Description

Vulcan™ Black Stoneware (Coarse) 164-VUC: 1200-1260C

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.

Vulcan Black Stoneware (Coarse) is not recommended for tableware. However, Vulcan Black Stoneware (Fine) is suitable for tableware.

  • Firing range: 1200-1260ºC
  • Biscuit temperature: 1000ºC
  • 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

Notes regarding Vulcan black stoneware bodies

Vulcan is not toxic according to European Rules (CLP) and also American Rules (ASTM D 4036). The manganese dioxide content in Vulcan bodies is lower than 5%: Under the CLP regulation, the manganese dioxide content required for classification as toxic must be greater than 25%. 

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