Vulcan Black Stoneware Clay Coarse 164-VUC
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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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