Metallurgical Raw Materials Supplier & Technical Partner
A practical guide to understanding ferrosilicon grades, key
selection factors, and applications in steelmaking and foundry
processes.
Talk to our experts for technical guidance and product recommendations.
Introduction
Table of Contents
Ferrosilicon is an essential alloying material in steelmaking and foundry operations. Choosing the right grade
is critical for achieving the desired chemical composition, improving process efficiency, and ensuring
consistent product quality. This guide explains the key differences between ferrosilicon grades and provides
practical advice to help you select the best option for your application.
What Is Ferrosilicon?
Ferrosilicon (FeSi) is an alloy composed of iron and silicon, typically containing 70-75% silicon, It is produced
by smelting silica, iron, and carbon in an electric arc furnace. Ferrosilicon is widely used as a deoxidizer,
alloying additive, and inoculant in steelmaking and foundry processes.
Common Ferrosilicon Grades
Ferrosilicon is available in several grades, with different silicon content and tailored applications.
Silicon Content (Si)
Related Product
Grade
Typical Applications
FeSi 70
≥ 70.0%
FeSi 72
≥ 72.0%
Deoxidation, alloying, cast iron production
FeSi 75
≥ 75.0%
High-purity requirements, special steel, export markets
Factors to Consider When Choosing a Grade
The right ferrosilicon grade depends on several factors, including chemical requirements, particle size, and your
Ferrosilicon (FeSi)
specific application.
Widely used for deoxidation, alloying
Silicon content
Impurity limits
and foundry applications.
Higher silicon content provides stronger
Consider limits for aluminum (Al), calcium (Ca),
deoxidation and alloying effects. Choose the
carbon (C) and other impurities based on your
View Product ->
grade that meets your target composition.
process requirements.
Particle size
Application requirements
Ferrosilicon is available in lumps, granules, or
Steelmaking, cast iron production, and special
custom sizes. Select the size that suits your
furnace and feeding system.
alloys may require different grades and
specifications.
Typical Applications by Grade
and expert support from Euralink Group
FeSi 70
FeSi 72
FeSi 75
2 Request a Quote
· General steelmaking
. Deoxidation and alloying
. High-purity steel
. Foundry applications
. Cast iron production
. Special alloy production
& Contact Sales
· Cost-effective solution
· Wide industrial use
. Export and premium markets
Buying Tips for Industrial Buyers
Related Articles
Confirm technical specifications
(Si, Al, Ca, C, size, etc.)
Consider total cost (quality, logistics, reliability)
Evaluate supplier quality control
Choose a supplier with stable supply and
and testing capabilities
export experience
Apr 22, 2025 – 6 min read
Request samples for trial testing
Discuss customized grades or packaging if needed
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