| Grade | Composition | |||
| Impurities(%) | ||||
| Si | Fe | AI | Ca | |
| ≥ | ≤ | |||
| 1101 | 99.79 | 0.1 | 0.1 | 0.01 | 
| 1501 | 99.69 | 0.15 | 0.15 | 0.01 | 
| 2202 | 99.58 | 0.2 | 0.2 | 0.02 | 
| 2502 | 99.48 | 0.25 | 0.25 | 0.02 | 
| 3303 | 99.37 | 0.3 | 0.3 | 0.03 | 
| 411 | 99.4 | 0.4 | 0.1 | 0.1 | 
| 421 | 99.3 | 0.4 | 0.2 | 0.1 | 
| 441 | 99.1 | 0.4 | 0.4 | 0.1 | 
| 553 | 98.7 | 0.5 | 0.5 | 0.3 | 
| 98 | 98 | 1 | 0.5 | 0.5 | 
| 97 | 97 | 1.7 | 0.7 | 0.6 | 
| Silicon metal powder | ||||||
| Chemical industry | Composition% | Specification | ||||
| Si | Fe | Al | Ca | Size in mesh | Size in um | |
| ≥ | ≤ | |||||
| 99.6 | 0.2 | 0.15 | 0.05 | 30-120mesh | 590um-124um | |
| 99.2 | 0.4 | 0.2 | 0.1 | 40-140mesh | 590um-124um | |
| 99 | 0.4 | 0.4 | 0.2 | 40-160mesh | 420um-92um | |
| 98.5 | 0.5 | 0.5 | 0.3 | 40-120mesh | 420um-124um | |
| 98 | 0.6 | 0.5 | 0.3 | 40-425mesh | 420um-36um | |
| Metallurgical | 99.6 | 0.2 | 0.15 | 0.05 | -150mesh | 100um | 
| 99.2 | 0.4 | 0.2 | 0.1 | -200mesh | 74um | |
| 99 | 0.4 | 0.4 | 0.2 | -325mesh | 44um | |
| 98.5 | 0.5 | 0.5 | 0.3 | -400mesh | 38um | |
| 98 | 0.6 | 0.5 | 0.3 | -600mesh | 25um | |
| Low grade silicon | 95-97 | impurity content≤4.0% | 40-140mesh | 420um-104um | ||
| 90-95 | -200mesh | 74um | ||||