Reliable Bulk FeSi 75 For Steelmaking
Product Overview
Ferro Silicon FeSi 75, also known as Ferro Silicon 75 or FeSi75, is a high-silicon ferroalloy used in steelmaking, stainless steel, special steel and foundry production. Its main functions include deoxidation, silicon alloying and metallurgical composition adjustment.
In steelmaking, FeSi 75 provides active silicon to react with dissolved oxygen in molten steel. This helps support deoxidation before casting and contributes to more predictable steel composition control. Compared with lower-silicon grades, FeSi 75 delivers more silicon per unit weight, which can reduce the total addition quantity under suitable furnace practice.
Chemical Composition and Specifications
The following specifications are common reference ranges. Final values should be confirmed by batch COA and customer requirements.
| Grade | Si | Al | Ca | C | P | S | Fe |
|---|---|---|---|---|---|---|---|
| FeSi 75-A | 75–80% | ≤1.5% | ≤1.0% | ≤0.2% | ≤0.04% | ≤0.02% | Balance |
| FeSi 75-B | 72–80% | ≤2.0% | ≤1.0% | ≤0.2% | ≤0.04% | ≤0.02% | Balance |
| Low Al FeSi 75 | 72–80% | Customized low Al | Customized | ≤0.2% | ≤0.04% | ≤0.02% | Balance |
| Customized Grade | As required | As required | As required | As required | As required | As required | Balance |
For premium steelmaking, buyers should pay special attention to Al, Ca, P and S. These indicators are not just numbers on a specification sheet. They can influence refining stability, inclusion behavior and downstream steel quality.
Contact us now for a detailed datasheet and bulk quotation.
Where FeSi 75 Is Commonly Used
In ordinary steelmaking, FeSi 75 is mainly used when the plant needs stable silicon addition and deoxidation before casting. The key production issue is not only removing oxygen, but keeping the deoxidation result consistent from one heat to another. Stable silicon content and screened particle size help reduce unnecessary adjustment during furnace or ladle operation.
In stainless steel production, buyers usually care more about impurity control. Low Al, controlled Ca and stable P/S levels may be required depending on the grade. In this case, FeSi 75 should be selected according to both silicon target and impurity limits.
In special steelmaking, FeSi 75 is often used when the process requires predictable alloy addition and cleaner molten steel treatment. A cheap but unstable material may increase correction cost during refining, so batch consistency matters more than a small price advantage.
In foundry production, Ferro Silicon 75 can be used as a silicon source and inoculation support material. The suitable size and grade should be selected according to cast iron type, melting practice and final casting requirements.
In magnesium and ferroalloy production, FeSi 75 may also be used as a raw material depending on the process route. For these applications, stable silicon content and size consistency are important for process control.
How We Pack FeSi 75 for Long-Distance Delivery
For bulk Ferro Silicon 75 orders, packing is part of product reliability. Poor packing may lead to moisture exposure, bag damage, material loss or difficult unloading at destination.
Common packing options include:
| Packing Type | Application |
|---|---|
| 25kg bags | Small and medium orders |
| 1 MT jumbo bags | Bulk industrial supply |
| Jumbo bags with inner liner | Moisture protection |
| Pallet packing | Easier warehouse handling |
| Customized export packing | Based on buyer requirement |
Zhen An can arrange packing according to order quantity, particle size, destination port and buyer handling requirements. For export shipments, clear labeling and batch separation can also be provided to support warehouse management and quality traceability.
What We Check Before FeSi 75 Shipment
For FeSi 75, reliable supply means more than delivering material on time. The chemical composition, size distribution and packing condition should all match the agreed specification.
Zhen An can provide:
- Si content testing;
- Al and Ca control;
- C, P and S inspection;
- particle size screening;
- powder/fines control;
- packing inspection;
- batch COA;
- third-party inspection before shipment.
We accept third-party inspection before shipment, including SGS, BV, Intertek or other internationally recognized inspection agencies.
Ask for COA and Particle Size Details
Send us your detailed requirement, and we will arrange sample delivery for your evaluation.
About Us
ZHEN AN INTERNATIONAL CO.,LIMITED
ZHEN AN supplies Ferro Silicon FeSi 75, FeSi 72, silicon metal, silicon carbide, silicon calcium alloy, cored wire and other metallurgical materials for global steelmaking and foundry buyers.
For bulk FeSi 75, Zhen An focuses on stable silicon content, controlled Al/Ca impurities, suitable particle size and export-ready packing. We do not recommend specifications only by price. Instead, we suggest buyers choose FeSi 75 according to steel grade, furnace process, impurity limits, feeding method and delivery requirement.
For buyers who need long-term supply, Zhen An can support regular bulk orders with batch COA and inspection documents according to customer requirements.
Need reliable bulk FeSi 75 for steelmaking?
Send us your required Si content, Al/Ca limits, particle size, order quantity and destination port. Zhen An can provide current specifications, batch COA and export packing details.
FAQ
Q:What is FeSi 75 used for?
A:FeSi 75 is mainly used as a deoxidizer, silicon alloying agent and metallurgical additive in steelmaking, stainless steel, special steel and foundry production.
Q:What is the silicon content of FeSi 75?
A:FeSi 75 usually contains about 72–80% silicon, depending on customer requirements and batch specification. Final values should be confirmed by batch COA.
Q:Why is low aluminum important in FeSi 75?
A:Low aluminum FeSi 75 is preferred when steelmakers need better impurity control. Excessive or unstable Al may influence refining behavior and inclusion control in some steel grades.
Q:What particle sizes are available for bulk FeSi 75?
A:Common sizes include 0–3mm, 3–10mm, 10–50mm and 10–100mm. Customized particle sizes can also be supplied according to buyer requirements.
Q:Is FeSi 75 suitable for stainless steel production?
A:Yes. FeSi 75 can be used in stainless steel production as a silicon source and deoxidizer. Buyers should confirm Al, Ca, P and S limits according to the steel grade.
Q:How should buyers choose a reliable FeSi 75 supplier?
A:Buyers should check Si stability, Al/Ca control, particle size, powder content, packing condition, batch COA and export delivery capability before choosing a FeSi 75 supplier.
Q:Can Zhen An provide COA or third-party inspection?
A:Yes. Batch COA can be provided. Zhen An accepts third-party inspection before shipment, including SGS, BV, Intertek or other internationally recognized inspection agencies.
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