| Grade | Chemical Composition(%) | |||||
| Ca | Si | C | Al | p | S | |
| ≥ | ≤ | |||||
| Ca30Si60 | 30 | 60 | 1.0 | 2.0 | 0.04 | 0.04 |
| Ca30Si55 | 30 | 55-60 | 1.0 | 2.0 | 0.04 | 0.04 |
| Ca30Si50 | 30 | 50-55 | 1.0 | 2.0 | 0.04 | 0.04 |
| Ca28Si55 | 28 | 55-60 | 1.0 | 2.0 | 0.04 | 0.04 |
| Ca28Si50 | 28 | 50-55 | 1.0 | 2.0 | 0.04 | 0.04 |
| Ca20Si50 | 20 | 50-55 | 1.0 | 2.0 | 0.04 | 0.04 |
| Ca10Si40 | 10-15 | 40-45 | 1.0 | 2.0 | 0.04 | 0.04 |