Ferro Silicon (FeSi)
Ferro silicon is a ferroalloy of iron and silicon. It is used as a deoxidiser and silicon source in steelmaking and to adjust silicon in cast iron.

Chemical analysis, %
| Element | FeSi 75 | FeSi 75 Low Al |
|---|---|---|
| Si | ≥ 75 | ≥ 75 |
| Al | ≤ 1.50 | ≤ 1.00 |
| C | ≤ 0.15 | ≤ 0.05 |
| P | ≤ 0.03 | ≤ 0.03 |
| S | ≤ 0.02 | ≤ 0.02 |
Grain size
- 1–3 mm
- 3–10 mm
- 10–50 mm
- 10–100 mm
FAQ
Which grades of Ferro Silicon are available?
Main grades: FeSi 75, FeSi 75 Low Al. The chemical analysis of each is in the table above.
Which grain sizes are supplied?
1–3 mm, 3–10 mm, 10–50 mm, 10–100 mm.
How do I get an analysis certificate and a price?
Send us the grade, quantity and grain size and request a quote; our sales team will reply with the analysis and price.
