| Siliciumpoeder | Grootte (mesh) | Chemische samenstelling % | |||
| SI | FE | Al | CA | ||
| ≥ | ≤ | ||||
| Chemisch siliciumpoeder | SI-(20-100 mesh) SI-(30-120 mesh) SI-(40-160 mesh) SI-(100-200 mesh) SI-(45-325 mesh) SI-(50-500 mesh) | 99.6 | 0.2 | 0.15 | 0.05 |
| 99.2 | 0.4 | 0.2 | 0.1 | ||
| 99.0 | 0.4 | 0.4 | 0.2 | ||
| 98.5 | 0.5 | 0.5 | 0.3 | ||
| 98.0 | 0.6 | 0.5 | 0.3 | ||
| Siliciumpoeder voor vuurvaste bekleding | -150 mesh -200 mesh -325 mesh -400 mesh -600mesh | 99.6 | 0.2 | 0.15 | 0.05 |
| 99.2 | 0.4 | 0.2 | 0.1 | ||
| 99.0 | 0.4 | 0.4 | 0.2 | ||
| 98.5 | 0.5 | 0.3 | 0.2 | ||
| 98.0 | 0.6 | 0.5 | 0.3 | ||
| Laag niveau | -200 mesh -325 mesh | 95-97 | Onzuiverheidsgehalte≤3.0% | ||
| Type | Chemische samenstelling (%) | |||
| SI (min.) | Max | |||
| FE | Al | CA | ||
| SI-1101 | 99.7 | 0.1 | 0.1 | 0.01 |
| SI-2202 | 99.5 | 0..2 | 0.2 | 0.02 |
| SI-3303 | 99.3 | 0.3 | 0.3 | 0.03 |
| SI-411 | 99.3 | 0.4 | 0.1 | 0.1 |
| SI-421 | 99.2 | 0.4 | 0.2 | 0.1 |
| SI-441 | 99.0 | 0.4 | 0.4 | 0.1 |
| SI-553 | 98.5 | 0.5 | 0.5 | 0.3 |
| 97% | 97 | 1.3 | 1.0 | 0.3 |
| Grootte | 10 MM 90% MIN/10 MM 90% MIN | |||