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How Much Does Ferro Silicon 75 Cost?

Dec 10, 2025

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1. How Much Does Ferro Silicon 75 Cost?​

Ferro Silicon 75​ means the alloy contains ~75% silicon​ (balance mainly iron, with small amounts of Al, Ca, C, etc.). It is one of the most commonly traded grades, used heavily in steel deoxidation, alloying, and inoculants for cast iron.

Indicative Price Range (Late 2024 / Early 2025)​

USD 1,300 – 1,600 / metric ton​ (CFR / FOB major ports, e.g., China, South Korea, India).
Bulk order discount:​ Large quantities (≥ 100 MT) may see prices at the lower end (~$1,300–1,400/MT).
Spot prices​ fluctuate weekly based on silica/quartz costs, electricity rates (production is energy intensive), and demand from steel mills.
Note:​ Prices can spike during high steel production periods or if there are supply constraints from major producers (China, Russia, Norway, Brazil).

 

2. What Is the Price of Ferro Silicon 72?​

Ferro Silicon 72​ contains ~72% silicon, slightly lower Si than the 75 grade, which often makes it marginally cheaper per ton, but pricing also depends on overall impurity levels and market segment.

Indicative Price Range (Late 2024 / Early 2025)​

USD 1,250 – 1,550 / metric ton​ (CFR / FOB).
Slightly lower silicon content can mean lower raw material consumption in production, but price difference vs. 75% is often only $20–50/MT​ depending on availability.
Used where slightly lower Si content is acceptable - e.g., certain foundry inoculants, some steel deoxidation applications.

 

Factors Influencing Ferro Silicon Prices​

Factor
Effect on Price
Silicon Content​
Higher Si (75 vs 72) usually commands slight premium.
Electricity Costs​
Major input; increases in power prices raise production cost.
Quartz/Raw Material Supply​
Shortages or higher purity quartz raise cost.
Export Policies​
China's export taxes/quotas strongly influence global prices.
Steel & Foundry Demand​
Boom periods push prices up; downturns reduce demand.
Logistics/Shipping​
Freight rates impact delivered price, especially CIF/CFR deals.

 

Quick Comparison Table​

Grade
Si Content
Typical Use
Indicative Price (USD/MT, late 2024)
FeSi 75
~75%
Steel deoxidation, alloying, cast iron inoculant
1,300–1,600
FeSi 72
~72%
Similar uses, where lower Si acceptable
1,250–1,550

 

Where to Check Live Prices​

ZhenAn​ – real‑time Chinese domestic & export prices.
ZhenAn – global ferroalloy market quotes.
ZhenAn​ – detailed weekly reports and forecasts.
Direct contact with ZhenAn for firm offers, especially for contract vs. spot buying.

 

3. What Is Ferro Silicon 75 Used For?​

Ferro Silicon 75​ is an alloy containing about 75% silicon​ and the remainder primarily iron, with small amounts of aluminum, calcium, carbon, and other trace elements. It is one of the most widely traded ferroalloy grades because of its balanced silicon content and versatility.

Main Applications​

Application
Purpose
Why FeSi 75 Is Chosen
Steel Deoxidation​
Removes oxygen from molten steel during ladle treatment
High Si content efficiently reacts with oxygen to form SiO₂, improving steel cleanliness and mechanical properties
Alloying Agent in Steel​
Increases strength, hardness, and corrosion resistance
Adds silicon to steel (e.g., electrical steel, spring steel) for desired magnetic or mechanical properties
Cast Iron Inoculation​
Controls graphite formation in gray iron
Promotes smaller, uniformly distributed graphite flakes, reducing chill and improving machinability
Production of Other Ferroalloys​
Used as a reductant in manufacturing processes
High Si acts as a strong reducing agent for ores of chromium, manganese, etc.
Welding Electrodes​
As a constituent in flux coatings
Improves arc stability and weld metal properties
Industries:​ Steel mills, foundries (gray & ductile iron), welding consumables manufacturing, ferroalloy production plants.

 

4. What Is Ferrosilicon 72 Used For?​

Ferrosilicon 72​ contains around 72% silicon, slightly less than FeSi 75. The lower silicon content can reduce cost while still meeting many process requirements where ultra‑high Si is not essential.

Main Applications​

Application
Purpose
Why FeSi 72 Is Chosen
Steel Deoxidation​
Similar to FeSi 75 but in applications tolerant of slightly lower Si
Still effective in removing oxygen; cost savings may drive selection
Foundry Inoculation​
Gray iron and some ductile iron treatments
Adequate Si level to nucleate graphite, with potential economic benefit
Silicon Additive in Non‑Critical Alloys​
Production of low‑silicon steels or cast irons
Meets specification without excess Si, avoiding over‑hardening
Chemical & Metallurgical Reactions​
As a reductant where precise Si control is needed
Slightly lower Si can tailor reaction kinetics in some processes
Industries:​ Steel production (where exact Si % specification allows 72%), general foundries, chemical reduction processes, and some export markets with specific import grade requirements.

 

Key Differences in Usage Between FeSi 75 and FeSi 72​

Silicon Content:​ FeSi 75 has higher Si → more efficient deoxidizer and stronger alloying effect; FeSi 72 is slightly cheaper and used where the extra Si is unnecessary.
Cost:​ FeSi 72 often carries a small price advantage per ton, making it economical for bulk use in less critical applications.
Specification Compliance:​ Some steel or casting standards call for minimum Si percentages; choosing 75 or 72 depends on meeting those specs economically.
Process Control:​ In inoculation, too much Si can create coarse graphite; 72% can give finer control in certain cast iron chemistries.

 

Summary:​

Ferro Silicon 75​ → Preferred for high‑efficiency steel deoxidation, alloying, and cast iron inoculation where maximum Si effectiveness is needed.
Ferrosilicon 72​ → Used where slightly lower Si content suffices, offering cost savings while still performing essential metallurgical functions in steel and foundry applications.

Both grades are fundamental in metallurgy for controlling oxygen, adjusting alloy chemistry, and improving material properties in industrial manufacturing.

 

Visit https://www.metal-alloy.com/ to learn more about the product. If you would like to learn more about the product price or are interested in purchasing, please email market@zanewmetal.com. We will get back to you as soon as we see your message.

 

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Iron Silicon Alloy With 75 Silicon Silver Grey Powder For High Strength Alloy Steel Making

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