Crystacal R is a formulated hemihydrate plaster (CaSO4.1/2H2O) produced from naturally occurring high-purity gypsum minerals.
It is a hard plaster from the Saint-Gobain Formula range
Extra hard white plaster for use where high strength and surface hardness are important.
White in colour, Crystacal R plaster is used to make hard casts with fine reproduction of detail. It is used in the manufacture of glass-reinforced gypsum (GRG) structures, decorative plasterwork, giftware, dental models, and more.
| Crystacal R | Measurements |
| Plaster to Water Mix Ratio (by Weight) | 100 / 35 (100 Plaster / 35 Water) |
| Water to plaster ratio (by Weight) | 35% by Weight |
| Initial Setting Time | 15 Minutes |
| Final Setting Time | 18 Minutes |
| Wet Compressive Strength MPa | 28 |
| Dry Compressive Strength MPa | 55 |
| Brinell Hardness MPa | 190 |
| Colour | White |
| Bulk Density Loose | 1100 kg/m³ |
| Bulk Density Compacted | 1500 kg/m³ |
