Keram 52 LS is a formulated hemihydrate plaster (CASO4 . ½ H2O) produced from naturally occurring gypsum mineral. It is White in colour.This product is used for jiggering in tableware industry when long workability time to cast moulds and long mould life are required.
Design for Jiggering
High Mechanical properties for Longer mould life
Longer casting time and short demoulding time
| Chemical Properties | |
|---|---|
| Brinell Hardness (MPa) | 61,5 |
| Chemical Composition | CaSO4 x 1/2H2O |
| Chemical Name | Calcium Sulphate Hemihydrate |
| Colour | off white |
| Dry Compressive Strength (MPa) | 28 |
| Flexural Strength (MPa) | 5,5 |
| Loose bulk density (kg/m³) | 900 |
| Particle Size Distribution (mesh size and % weight retained) | + 200 microns max. 0.04 % |
| Pore Volume (%) | 35 |
| Setting Parameters | |
|---|---|
| Initial setting time (minutes) | 11 - 17 |
| Linear Expansion (%) | 0,20 |
| Vicat Ring Fluidity (cm) | 17 - 23 |
| Plaster to Water Ratio | |
|---|---|
| Plaster to Water mix ratio (by weight) | 100/52 |
| Plaster to Water ratio (by weight) | 1.92 |
| Water to Plaster ratio (by weight) | 52% |
The recommended plaster to water ratio is between1,92 : 1 and 1,80 : 1, with a mixing time of approx. 2 to 4 minutes, depending on batch size.
Packaging available : 25kg
Shelf life : 6 months