What is the price of ferrosilicon exported from China on April 10, 2026?
| China's export price of ferrosilicon on April 10, 2026 | ||||
| Unit: US dollars/ton | ||||
| product | Brand | Quotation | rise and fall | Remark |
| Ferrosilicon | 72 | 1140-1160 | -- | FOB Tianjin Port |
| Ferrosilicon | 75 | 1180-1200 | -- | FOB Tianjin Port |
What is Ferrosilicon Used For?
Ferrosilicon (FeSi) is a widely used industrial ferroalloy composed of iron and silicon, primarily applied as a deoxidizer, alloying agent, and inoculant in steelmaking and cast iron production. Its main function is to remove oxygen from molten steel, improve steel purity, and enhance mechanical properties such as strength, hardness, and corrosion resistance. It is also essential in cast iron production to control graphite formation and improve casting quality.
Ferrosilicon Specifications (Industrial Grades)
| Grade | Si Content (%) | Al (%) | C (%) | S (%) | P (%) | Fe (%) | Particle Size | Application |
|---|---|---|---|---|---|---|---|---|
| FeSi 75 | 72–75 | ≤2.0 | ≤0.2 | ≤0.02 | ≤0.04 | Balance | 10–50 mm | Steelmaking |
| FeSi 72 | 70–72 | ≤2.5 | ≤0.2 | ≤0.03 | ≤0.05 | Balance | 10–80 mm | Foundry |
| FeSi 65 | 65–70 | ≤2.5 | ≤0.3 | ≤0.03 | ≤0.05 | Balance | 10–100 mm | Deoxidation |
| FeSi Powder | 15–75 | Variable | Variable | Variable | Variable | Balance | 0–3 mm | Powder metallurgy |
Packaging: 1 MT jumbo bags / steel drums
Form: Lump / granular / powder
What is ferrosilicon used for in steelmaking?
Ferrosilicon is mainly used as a powerful deoxidizer in steel production. During steelmaking, oxygen is a harmful impurity that can cause porosity, brittleness, and reduced mechanical strength. Ferrosilicon reacts with oxygen in molten steel to form stable silicon oxides, effectively removing oxygen and improving steel cleanliness.
It is also used as a silicon alloying agent, helping to increase the silicon content in steel. This improves properties such as elasticity, tensile strength, and heat resistance. As a result, ferrosilicon is widely used in structural steel, tool steel, and electrical steel production.
What is ferrosilicon used for in cast iron production?
In cast iron manufacturing, ferrosilicon acts as an inoculant. It promotes the formation of fine graphite structures instead of large, brittle carbides. This significantly improves the mechanical properties of cast iron, including:
Better machinability
Improved wear resistance
Reduced cracking risk
More uniform microstructure
Because of these effects, ferrosilicon is essential in producing ductile iron, gray iron, and high-strength cast components used in automotive and machinery industries.
Other industrial applications of ferrosilicon
Ferrosilicon is also used in several specialized metallurgical and chemical processes. In the magnesium production industry, it acts as a reducing agent in the Pidgeon process, where it helps extract magnesium from dolomite.
In welding electrode manufacturing and alloy production, ferrosilicon provides controlled silicon addition, ensuring stable chemical composition. It is also used in dense medium separation (DMS) in mineral processing, where ferrosilicon powder is used as a dense medium for ore separation.
Grade Comparison: FeSi 75 vs FeSi 72 vs FeSi 65
FeSi 75 vs FeSi 72
FeSi 75 contains higher silicon content and is the most commonly used grade in steel deoxidation and alloying, offering stronger deoxidation efficiency. FeSi 72 is slightly lower in silicon content and is often used in foundry applications where cost optimization is more important than maximum deoxidation performance.
FeSi 75 vs FeSi 65
FeSi 75 is used in high-grade steel production, where strict control of oxygen and alloy composition is required. FeSi 65 is more suitable for general steelmaking and basic deoxidation, where ultra-high performance is not necessary. The main difference is efficiency and impurity control capability.
Summary
Ferrosilicon is a critical ferroalloy used mainly for steel deoxidation, alloying, and cast iron inoculation. It improves steel purity, enhances mechanical properties, and optimizes cast iron microstructure. Different grades such as FeSi 75, FeSi 72, and FeSi 65 are selected based on application requirements, cost considerations, and required metallurgical performance.
FAQ – Ferrosilicon Applications
1. What is the main use of ferrosilicon in steelmaking?
It is mainly used as a deoxidizer and silicon alloying agent, improving steel purity and mechanical strength.
2. Why is ferrosilicon important in cast iron?
It acts as an inoculant that refines graphite structure and improves mechanical properties of cast iron.
3. What is FeSi 75 used for?
FeSi 75 is used in high-quality steel production due to its high silicon content and strong deoxidation ability.
4. Can ferrosilicon be used in magnesium production?
Yes, it is used as a reducing agent in the Pidgeon process for magnesium extraction.
5. What is the difference between FeSi 65 and FeSi 75?
FeSi 75 has higher silicon content and stronger deoxidation performance, while FeSi 65 is used for general applications.
6. What particle size of ferrosilicon is best for steelmaking?
Typically 10–50 mm lump ferrosilicon is used for steelmaking, while powder is used for special metallurgical processes.
Looking for Reliable Ferrosilicon Supply?
We supply FeSi 75, FeSi 72, and FeSi 65 with stable quality, low impurities, and competitive factory pricing for global steelmaking and foundry industries.
Contact us for quotation and bulk supply:
Email: sales@zanewmetal.com
WhatsApp: +86 15518824805
Stable silicon content & low impurity control
Bulk supply for steel mills and foundries
Fast global delivery support
Third-party inspection available
Why Choose ZhenAn
Trusted Ferrosilicon Supplier – Quality · Consistency · Supply Reliability
All ferrosilicon (FeSi) products are produced under ISO9001-certified systems with strict control from raw material selection to smelting and crushing. COA, SDS, and REACH documentation are available for global steel industry procurement.
30+ Years of Ferroalloy Experience
With decades of production expertise, ZhenAn understands ferrosilicon's role in deoxidation, inoculation, and alloying, ensuring stable performance in steelmaking and foundry applications.
Stable Si Content & Low Impurities
Precise control of silicon content and impurities (Al, C, S, P) ensures consistent reaction efficiency, improving steel cleanliness and casting quality.
Flexible Grades & Supply Capacity
Multiple grades such as FeSi 72% and FeSi 75% are available in different lump sizes and powder forms, with stable supply for long-term contracts.
Fast Response & Professional Support
24-hour quotation service with experienced technical team support to help customers select suitable grades and optimize metallurgical performance.