| Ca(min) | Si | C(max) | Al(max) | S(max) | P(max) | Size | |
| Grade 1 | 30% | 55-65% | 1.0 | 1.5 | 0.05 | 0.04 | -200mesh,-100mesh, -60mesh,0-0.4mm,0-1mm,0-2mm,2-5mm,10-50mm,10-100mm,10-200mm,0-200mm,as the client's requirement. |
| Grade 2 | 28% | 55-65% | 1.0 | 1.5 | 0.05 | 0.04 | |
| Grade 3 | 25% | 55-65% | 1.2 | 2.0 | 0.08 | 0.04 | |
| Grade 4 | 20% | 50-65% | 1.2 | 2.0 | 0.08 | 0.04 |
Calcium Silicon is a kind of ideal oxygen, desulfurizer. It can be applied to the production of quality, special steel and special alloy steel.