Anpak SW
Anpak SW is a plaster used in ceramics to produce working moulds for the slip casting of tableware and sanitaryware. It can also be used for the production of working moulds for the automatic forming of clay.
Plaster
| Chamotte |
| Al2O3 content (%) |
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Open porosity (%) |
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| Vitreous phase (%) |
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Pyroscopic resistance (°C) |
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| Apparent density |
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| Plaster |
| Chemical composition |
CaSO4½H2O |
Linear expansion (%) |
0.22 |
| Chemical name |
Calcium sulphate hemihydrate |
Colorimeter L (L* value) |
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| Plaster to water mix ratio (by weight) |
100/70 |
Colorimeter a (a* value) |
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| Plaster to water ratio (by weight) |
1.43:1 |
Colorimeter b (b* value) |
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| Water to plaster ratio (by weight) |
70% |
Colour |
white |
| Fluidity / spread (cm) |
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Sieve analysis (Mesh size & % weight retained) |
+ 200 microns : < 0.04% |
| Initial setting time (minutes) |
17-22 |
Bulk density loose (kg / m³) |
650-750 |
| Final setting time (minutes) |
max 30 |
Bulk density compacted (kg / m³) |
800-1050 |
| Wet compressive strength MPa |
8 |
Apparent bulk density (g/cm³) |
0.65-0.75 |
| Dry compressive strength MPa |
15 |
Pore volume (%) |
41 |
| Flexural strength MPa |
5.5 |
Start of warming phase (minutes) |
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| Brinell hardness MPa |
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End of warming phase (minutes) |
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| Hardness shore D |
70 |
Shelf life (Months) |
6 |
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| Refractory Investments |
| Water used (%) |
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Liquid Density |
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| Mixing Time (minutes) |
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Linear Expansion 1 hour after setting (%) |
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| Working / Casting Time (minutes) |
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Linear Expansion 2 hours after setting (%) |
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| Initial Setting Time (minutes) |
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Shelf Life (months) |
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| Gypsum |
| Chemical composition |
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pH |
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| Chemical name |
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Solubility of Gypsum (g/ litre) |
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| Minimum Gypsum purity (%) |
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Bulk density loose(kg/cm³) |
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| Sieve analysis (mesh size & % weight retained) |
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Bulk density compacted (kg/cm³) |
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| Colorimeter L (L* value) |
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Apparent bulk density |
[] |
| Colorimeter a (a* value) |
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Gypsum hardness (MOH scale) |
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| Colorimeter b (b* value) |
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Shelf life |
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| Colour |
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Please refer to product data sheets for futher information