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SiO2 PRNF 12,5KG zwartbakkend 40% 0-0.5mm chamotte 1100°-1240°

Artikelnr: SiO PRNF
13,00
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Beschrijving

12.5 kg zwartbakkende klei 1000-1260°C

Black sculpture clay body with 40% fine grog (0-0.5mm). Formulated for artistic ceramics, it is ideal for sculpture. The high content of grog confers expression a beautiful texture surface and an excellent behavior during drying and firing. Its beautiful and intense black firing color in oxidizing atmosphere is very exclusive of PRN range and becomes an ideal artistic mean of expression. In reducing atmosphere, metallic effects with shades of blue are obtained.

Firing range: 1200-1260°C
Biscuit: Cone 06 (1855ºF)
Water content: 21%
Plasticity (IP Atterberg): 22
Carbonate content (CaCO3): 0%
Drying shrinkage: 7.0%
Firing shrinkage at Cone 7: 4.5%
Porosity (water absorption) at Cone 7: 9.4%
Dry bending strength: 2.0 N/mm2
Fired bending strength at Cone 7: 27.5 N/mm2
Thermal coefficient (a25-500ºC): 55.8x10-7ºC-1

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