Sio-2 ZUMAIA Grey Scuplture Stoneware Sold in 27.5lb bags High fire gray body with 40% fine grog (up to 35 Mesh). Formulated for artistic and decorative ceramics, it is ideal for sculpture and pieces for outdoors (garden pots, tiles, etc.). The high content of grog confers a beautiful textured surface and an excellent behavior during drying and firing. Depending on the firing temperature, it develops an interesting range of grays, from cement to dark gray, which satisfies the most avant-garde trends in artistic and decorative ceramics. Weight/Volume - 27.5 lbs - 12.5 kg Grog - Fine grog State - Moist form (plastic body) Stiffness - For wheel throwing and handbuilding Firing range: Cone 5-10 (2192-2372ºF / 1200-1300ºC) Bisque firing temperature: Cone 06 (1832ºF / 1000ºC) Water content: 17% Plasticity (IP Atterberg): 16 Carbonate content (CaCO3): 0% Drying shrinkage: 5.5% Firing shrinkage at Cone 10: 3.9% Porosity (water absorption) at Cone 10: 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
