Ferro silicon powder is with coke and steel scurf, quartz as raw material and made by using electic furnace melting. Ferro Silicon powder is a kind of ferroalloy which is composed of forum and silicon. The ferrosilicon is silver grey and mainly used as the inoculants and nodulizers in casting industry and deoxidizer in steelmaking.
| Item | Si | Mn | P | S | C | Size(mesh) |
| Si75 | range | less than or equal to | ||||
| 70-72 | 0.4 | 0.035 | 0.02 | 0.3 | 0- 425 | |
| 65 | 0.4 | 0.040 | 0.03 | 0.5 | 0- 425 | |
| 60 | 0.4 | 0.040 | 0.04 | 0.6 | 0- 425 | |
| 55 | 0.4 | 0.050 | 0.05 | 0.7 | 0- 425 | |
| 45 | 0.4 | 0.050 | 0.06 | 0.9 | 0- 425 | |
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