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Potclays Onyx Black Porcelain Available In Store CLY

Potclays Onyx Black Porcelain Available In Store CLY

Regular price £23.24 GBP
Regular price Sale price £23.24 GBP
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164-ONYX - Onyx Black Porcelain

  • Recommended firing range 1200-1240C / Cone 5-6
  • Indicative texture 1 (Smooth 1-Coarse 10).
  • 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. 
  • Compatible with Aneto Porcelain 164-ANET.
  • Onyx Black Porcelain is suitable for tableware (food-safe), according to ISO 6486.
  • The manufacturer recommends zinc-free clear glaze such as Mayco SW004 for Onyx Black Porcelain.

SIO2 Technical Data:

  • Biscuit: Cone 06 (1020ºc)
  • 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 (at 25-500ºC): 54.3x10-7ºC-1"
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