Rokk Grey Grogged Stoneware 164-ROKK
Recommended firing range 1200-1300C
Indicative texture 7-8 (Smooth 1-Coarse 10).
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.
Supplied in a 12.5kg bag.
SIO2 technical data:
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): 59.9×10^-7ºC^-1″
