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  • Potclays ROKK Grey Grogged Stoneware 12.5kg

ROKK Grey Grogged Stoneware 12.5kg

Article number: 164-ROKK
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ROKK Grey Grogged Stoneware 1200-1300˚C 12.5kg

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Rokk Grey Grogged Stoneware has been developed for sculptural applications and for outdoors pieces, the high grog content (40% fine grog 0-0.5mm) providing a beautiful textured surface and excellent handling qualities. Depending on the firing temperature this body takes on a range of grey hues. To retain a 'cool grey', fire at 1200C or below. The grey hue can become 'brownish' above this temperature and certain glazes will emphasise this.


Firing range: 1200-1300ºC


Biscuit temperature: 1000ºC


Water content: 17%


Plasticity (IP Atterberg): 16


Carbonate content (CaCO3): 0%


Drying shrinkage: 5.5%


Firing shrinkage (1300ºC): 3.9%


Porosity (water absorption at 1300ºC): 2.6%


Dry bending strength: 2.5 N/mm2


Fired bending strength (1300ºC): 37.8 N/mm2


Thermal coefficient (25-500ºC): 59.9x10^-7ºC^-1"

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