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Traditional red earthenware clay. It is a high quality and polyvalent clay, very popular for its fineness and plasticity. Its coefficients of thermal expansion are ideal for standard pottery glazes, in both single and twice firing processes. Incredible results in reducing atmosphere can be obtained (metallic reflection technique). Available in powder (dry form) and extruded body (moist form) in a wide range of water content depending on the shaping application: wheel-throwing, modelling and shaping processes (extruding and pressing).
Firing range: 970-1055ºC / Cone 06-04
Packaging 12,5 kg.
Water content (throwing): 22%
Plasticity (IP Atterberg): 17
Carbonate content (CaCO3): 10%
Drying shrinkage: 5.5%
Firing shrinkage (1000ºC): 0.6%
Porosity (water absorption at 1000ºC): 13.5%
Dry bending strength: 6.6 N/mm2
Fired bending strength (1000ºC): 27.9 N/mm2
White stoneware clay with 40% impalpable grog 0-0.2 mm (up to 80 Mesh). Formulated for artistic ceramics, it is ideal for throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Its particular ivory colour after firing is much appreciated and provides an excellent ware for glazes and colouring oxides, which develop bright and intense tones. Suitable for tableware (food-safe), according to ISO 6486.
Packaging: 12,5 kg
Burning temperature 1240°C-1300°C
Biscuit temperature: 1000ºC / Cone 06
Water content: 19%
Plasticity (IP Atterberg): 16
Carbonate content (CaCO3): 0%
Drying shrinkage: 5.9%
Firing shrinkage 1300ºC: 7.0%
Porosity (water absorption) at 1300ºC: 0.0%
Dry bending strength: 3.0 N/mm2
Fired bending strength 1300ºC: 51.0 N/mm2
Caramel stoneware clay with 40% impalpable grog 0-0.2 mm. Formulated for artistic ceramics, it is ideal for throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Depending on the firing temperature, it develops a beautiful range of natural tones, from oatmeal beige to caramel brown, which create a warm base that is highly appreciated in ceramic decoration. Suitable for tableware (food-safe), according to ISO 6486.
Packaging: 12,5 kg
Firing range: 1200-1300ºC / Cone 5-10
Biscuit temperature: 1000ºC / Cone 06
Water content: 19%
Plasticity (IP Atterberg): 13
Carbonate content (CaCO3): 0%
Drying shrinkage: 6.2%
Firing shrinkage 1300ºC: 5.6%
Porosity (water absorption) at 1300ºC: 0.1%
Dry bending strength: 3.5 N/mm2
Fired bending strength 1300ºC: 50.8 N/mm2
Traditional white earthenware clay. High whiteness in oxidising atmosphere. It is very suitable for the use of traditional pottery glazes and colouring oxides. High fired bending strength. Available in extruded body (moist form), being suitable for wheel-throwing, shaping and modelling.
Firing range: 1050-1080ºC/ Cone 05-03
Water content (throwing): 22%
Plasticity (IP Atterberg): 14
Carbonate content (CaCO3): 14%
Drying shrinkage: 6.2%
Firing shrinkage 1050ºC: 0.8%
Porosity (water absorption) at 1050ºC: 14.4%
Dry bending strength: 6.8 N/mm2
Fired bending strength 1050ºC: 32.2 N/mm2
Black stoneware clay with 40% impalpable grog 0-0.2 mm (up to 80 Mesh). Formulated for artistic ceramics, it is ideal for wheel-throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Its beautiful and intense black firing colour in oxidising 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. Suitable for tableware (food-safe), according to ISO 6486. Available in extruded body (moist form).
Packaging 12,5 kg.
Firing range: 1200-1240ºC / Cone 5-6
Biscuit temperature: 1000ºC / Cone 06
Water content: 21%
Plasticity (IP Atterberg): 22
Carbonate content (CaCO3): 0%
Drying shrinkage: 7.0%
Firing shrinkage (1240ºC): 7.1%
Porosity (water absorption at 1240ºC): 1.3%
Dry bending strength: 4.6 N/mm2
Fired bending strength (1240ºC): 33.3 N/mm2
Traditional white earthenware clay. High whiteness in oxidising atmosphere. It is very suitable for the use of traditional pottery glazes and colouring oxides. High fired bending strength. Available in extruded body (moist form), being suitable for wheel-throwing, shaping and modelling.
Packaging 12,5 kg.
Firing range: 1050-1080ºC/ Cone 05-03
Water content (throwing): 22%
Plasticity (IP Atterberg): 14
Carbonate content (CaCO3): 14%
Drying shrinkage: 6.2%
Firing shrinkage 1050ºC: 0.8%
Porosity (water absorption) at 1050ºC: 14.4%
Dry bending strength: 6.8 N/mm2
Fired bending strength 1050ºC: 32.2 N/mm2
White earthenware clay with 20% fine grog 0-0.5 mm (up to 35 Mesh). Ideal for medium size pieces. The presence of grog confers to clay a very interesting textured surface (not flat) which, in turn, provides a set of suitable properties for the design of pieces in complex drying situations, thus avoiding the creation of deformations and cracks. Available in extruded body (moist form), being suitable for shaping and modelling.
Packaging 12,5 kg.
Firing range: 1050-1080ºC/ Cone 05-03
Water content (throwing): 17%
Plasticity (IP Atterberg): 13
Carbonate content (CaCO3): 13%
Drying shrinkage: 5.3%
Firing shrinkage (1050ºC): -0.3%
Porosity (water absorption at 1050ºC): 11.2%
Dry bending strength: 3.7 N/mm2
Fired bending strength (1050ºC): 26.8 N/mm2
Stoneware S. Burning temperature: 1000°C - 1140°C. Color after firing: brown-black. Ready-to-use evacuated mass, suitable for the potter's wheel, hand modeling.
Technical data of Sibelco S:
Loss on ignition: 6.5%Ka
Mass fraction of moisture: 22.5%
Drying shrinkage: 7.8%
Shrinkage during firing: 5.8%
Water absorption: 1100°C - 1.0%
Packaging: 10 kg
Ceramic body Stoneware RAKU 5015. Chamotte content 50%, chamotte fraction 0-1.5 mm. Burning temperature: 1000°C - 1280°C. Color after firing: light cream, light grey. Ready-to-use, vacuum-packed mass developed for Raku firings, suitable for molding and hand-sculpting.
Technical data of Sibelco RAKU 5015 stone mass:
Loss on ignition: 3.8%
Mass fraction of moisture: 16.0%
Drying shrinkage: 4.5%
Firing shrinkage: 3.5%
Water absorption: 1200°C - 3.5%
Packaging: 10 kg
Witgert 11sf 0-0.5 - white, fine-chamotte plastic ceramic body produced by Witgert Germany. Suitable for hand sculpting, potter's wheel, sculpture. The mass contains kaolin additives.
Color: white-light gray
Drying shrinkage: 6.2%
Firing shrinkage (1200°C): 6.1%
Water absorption (1200°C): 2.8%
Fireclay content: 25%
Fireclay size: 0 - 0.5 mm.
Sintering temperature: 1220°C
Firing range: 1000–1300 ºC
Packaging: 10 kg
