 
                                Ferrosilicon is also the basis of pre-alloys for the manufacture such as fesimg for the modification of melted malleable cast irons. Special grades of ferrosilicon such as low-alumina, high-purity,...
DESCRIPTION
Ferrosilicon is also the basis of pre-alloys for the manufacture such as fesimg for the modification of melted malleable cast irons. Special grades of ferrosilicon such as low-alumina, high-purity, and low-carbon ferrosilicon, are used to produce special steel. The special grade of ferrosilicon can make the inclusion content and carbon content of the steel more low level than ordinary ferrosilicon .
| Ferro Silicon | |||||||||
| No. | Product grades | Chemical Composition(%) | |||||||
| Si | Al | Ca | Mn | Cr | P | S | C | ||
| ≤ | |||||||||
| 1 | FeSi75A10.5-A | 74.0-80.0 | 0.5 | 1.0 | 0.4 | 0.3 | 0.035 | 0.02 | 0.1 | 
| 2 | FeSi75-A | 74.0-80.0 | 0.4 | 0.3 | 0.04 | 0.02 | 0.1 | ||
| 3 | FeSi75-B | 74.0-80.0 | 0.4 | 0.3 | 0.04 | 0.02 | 0.1 | ||
| 4 | FeSi65 | 65.0-72.0 | 0.6 | 0.5 | 0.04 | 0.02 | |||
| 5 | FeSi45 | 40.0-47.0 | 0.7 | 0.5 | 0.04 | 0.02 | |||
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