| Symbol | Description | Min. Al2O3 content [%] |
Min. common refractoriness sP |
Granularity [mm] |
Aggregate type | Max. working temp.[oC] |
| S-PLAST | Refractory grog-based ramming mix | 38 | 173 | 0-5 | refractory grog | 1350 |
| B-PLAST | Refractory grog and bauxite-based ramming mix | 55 | 177 | 0-5 | refractory grog, bauxite | 1460 |
| A-PLAST | Andalusite-based refractory grog | 58 | 179 | 0-5 | andalusite | 1500 |
| K-PLAST | Fine aloxite-based refractory grog | 90 | 183 | 0-5 | aloxite | 1600 |