Ferro Silicon, a widely used alloy, can be used as de-oxygen agent in steel casting and steel making, can be also used as an alloy agent in making silicon steel, Elastic steel and heat-resistant steel.

In casting process, Fe Si is acommon inoculant and exothermic agent out can also be used as reducing agent Fe, in making low carbon alloy production, for example in Few and FeMo Iron making.

Ferrosilicon powder or atomized ferrosilicon powder can be used as coating for welding rod production.

Ferrosilicon can be used for high-temperature smelting of magnesium metal. 1 ton of metallic magnesium needs to consume about 1.2 tons of ferrosilicon.