Supraduro S14 JM is a beta hemihydrate formulated plaster used in the ceramic industry to produce working moulds for the Spagless pressure casting of Sanitaryware.
Designed for Spagless
Fine surface details
Accumulation of water inside mould control, better drying efficiency
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.1/2H2O |
| Colour | off-white |
| Minimum gypsum purity % | >92 |
| Mechanical Properties | |
|---|---|
| Dry compressive strength (Mpa) | >10 |
| Flexural Strength (MPa) | >4.0 |
| Setting Parameters | |
|---|---|
| Final setting time (minutes) | < 40 |
| Initial setting time (minutes) | 15 - 20 |
| Linear Expansion (%) | < 0.16% |
| Physical Properties | |
|---|---|
| Loose bulk density (kg/m³) | 620 - 720 |
| Particle Size (% weight retained) |
< 6.0% at 63 µm <1% at 90 µm |
| Plaster to Water Ratio | |
|---|---|
| Plaster to Water Ratio (by weight) | 1.33:1 |
| Water to plaster ratio ( by weight) | 75% |
The recommended plaster to water ratio is between 1.33:1 and 1.43:1, with a mixing time of approx. 4 to 6 minutes at 350 rpm , depending on batch size.The water temperature before mixing must be controlled between 8°C and 15°C.Mixing utensils should always be clean and free from set plaster. Use distilled water only. For consistent results, attention must be given to the correct proportioning and mixing of the plaster and water.Add the weighed quantity of plaster slowly into the measured volume of water and allow to soak. Do not mix fresh plaster with that which has been mixed for some time previously.Changes to plaster to water ratio will influence product performance, particularly setting time and strength and absorption capability.
Packaging available : 25 kg
Shelf life : 6 months
Packaging available : 1.05 T
Shelf life : 6 months