GlinArt - GYPSUM FOR MOLDS 25 kg
GlinArt gypsum for molds is a formulated gypsum for the production of molds for ceramics. It is used in: Sanitary ceramics, ceramic vessels, industrial elements, art & decoration, metal casting,...*FREE DELIVERY FOR CLAY OVER 100 EUR DOES NOT APPLY.
Price with VAT:
31,23 €
TECHNICAL INFORMATION
Gypsum: water ratio
| |
Gypsum : water ratio (weighted) | 1.45 : 1 (possible from 1.20:1 to 1.45:1) |
Water : gypsum ratio (weighted) | 69 % |
Gypsum: water ratio (weighted) | 100 : 69 mixing time 2-4 minutes |
Chemical properties
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Chemical name | Calcium sulfate hemihydrate |
Chemical composition | CaSO4.1/2H2O |
Setting speed
| |
Vicat ring fluidity (cm) | 17-22 |
Setting start (minutes) | 10-15 |
Linear expansion (%) | 0.2 |
Mechanical properties
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Flexural strength (MPa) | 5.6 |
Brinell hardness (MPa) | 21 |
Compressive strength (MPa) | 12 |
Porosity volume (%) | 50 |
Physical properties
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Particle size (% residue) | 4% over 90 µm |
Bulk density (g/cm³) | 800 |
