Product Overview

Ferro Silicon (FeSi) is a versatile iron-silicon alloy widely used as a deoxidizer, inoculant, and alloying agent in the steel and cast iron industries. Produced by reducing silica with coke in the presence of iron, our FeSi offers consistent chemistry, low impurity levels, and customized sizing to meet global standards.

With silicon content ranging from 50% to 75%, Ferro Silicon plays a critical role in improving the mechanical properties of steel and cast iron, including tensile strength, hardness, and corrosion resistance.

Key Specifications

Grade	Si Content	C ≤	Al ≤	S ≤	P ≤	Size Range
FeSi 45%	45% min	0.20%	1.50%	0.02%	0.05%	10–50mm / 50–100mm
FeSi 65%	65% min	0.15%	1.50%	0.02%	0.04%	10–50mm / 50–100mm
FeSi 72%	72% min	0.12%	1.20%	0.02%	0.04%	3–10mm / 10–50mm
FeSi 75%	75% min	0.10%	1.00%	0.02%	0.03%	As required

Custom grades (e.g., low Al, high-purity FeSi) and sizes (powder, granules, lumps) are available upon request.

Main Applications

1. Steelmaking (Deoxidizer)

Removes excess oxygen from molten steel, preventing blowholes and porosity.

Improves yield strength, hardness, and elasticity of carbon and alloy steels.

2. Foundry (Inoculant for Cast Iron)

Promotes formation of Type A graphite in gray iron.

Increases tensile strength and wear resistance of ductile and gray iron castings.

3. Production of Electrical Steels

High-purity FeSi (≥75%) used in silicon electrical steel for transformers and motors.

4. Smelting of Ferroalloys & Master Alloys

Used as a reducing agent or base material for alloys like FeSiMg, FeSiBa, etc.

FerroSilicon-72 8

Why Choose Our Ferro Silicon?

✅ High Purity & Consistency – Low carbon, sulfur, and phosphorus content ensures stable metallurgical performance.
✅ Custom Sizing – From 0–3 mm fine powder to 50–100 mm lump, packed to your melt shop requirements.
✅ Fast Delivery – Available in 1 MT big bags, 25 kg woven bags, or bulk containers.
✅ Quality Assured – Each batch is tested by ICP-OES and XRF; certificates provided with every shipment.
✅ Global Export Experience – Reliable supply to steel mills, foundries, and refractory plants worldwide.