Standard Grade Ferro Silicon 72 For Foundry
Standard Grade Ferro Silicon 72 for Foundry
Standard Grade Ferro Silicon 72 for Foundry is a ferrosilicon alloy specifically designed for foundry production, with a nominal silicon content of 72%. It is not the highest silicon grade on the market, but rather a more practical choice for actual production.
In daily gray iron and ductile iron production, this standard grade Ferro Silicon 72 is primarily used as a silicon addition agent. Its functions include adjusting the silicon content in molten iron, supporting inoculation, and meeting general metallurgical addition requirements. Its value lies in providing stable silicon input while helping foundries control material costs in most standard applications, offering better cost-effectiveness than higher silicon grades.
In practical use, the key aspects of this material are its practicality, including stability of silicon content, compatibility between particle size and feeding method, control of powder and fines content, consistency of quality from batch to batch, and suitability of packaging for storage and long-distance transportation.
Zhen An supplies Standard Grade Ferro Silicon 72 (FeSi 72) in various particle sizes for gray iron, ductile iron, and general foundry applications.
Chemical Composition
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 72 Standard | 70–75% | ≤2.0% | ≤1.5% | ≤0.2% | ≤0.04% | ≤0.02% | Balance |
| FeSi 72 Low Al | 70–75% | Customized low Al | Customized | ≤0.2% | ≤0.04% | ≤0.02% | Balance |
| Customized FeSi 72 | As required | As required | As required | As required | As required | As required | Balance |
For foundry applications, buyers should pay attention to Si stability, Al and Ca control, P/S limits and particle size distribution. These indicators may affect melting behavior, inoculation response and final casting consistency.
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When FeSi 72 Is More Practical Than FeSi 75
FeSi 72 and FeSi 75 are both common ferrosilicon grades, but they are not always used for the same purpose.
| Item | FeSi 72 | FeSi 75 |
|---|---|---|
| Silicon Content | Usually 70–75% | Usually 72–80% or 75–80% |
| Cost Position | More economical for routine use | Higher silicon input |
| Common Foundry Use | General cast iron production | Higher Si requirement or stricter process |
| Buyer Focus | Cost balance, size, stable supply | Higher Si content, impurity control |
| Suitable For | Gray iron, ductile iron, daily foundry use | Higher-grade steelmaking or special requirements |
For many foundries, FeSi 72 is a practical standard grade because it provides enough silicon input for daily production while keeping material cost under better control. FeSi 75 may be selected when the process requires higher silicon input or stricter impurity control.
Packing for Foundry Use and Export Delivery
FeSi 72 is often shipped in bulk, so packing should match both transportation and warehouse handling requirements. For foundry buyers, good packing can reduce material loss, moisture exposure and unloading problems.
Common options include:
| Packing | Use |
|---|---|
| 25kg bags | Small and medium orders |
| 1 MT jumbo bags | Bulk foundry supply |
| Jumbo bags with inner liner | Better moisture protection |
| Pallet packing | Easier warehouse handling |
| Customized packing | Based on buyer requirements |
For long-distance shipment, clear labeling and batch separation are recommended. This helps buyers manage stock and trace material back to the corresponding COA.
What We Check Before Shipment
For Ferro Silicon 72, both composition and physical form should meet the agreed specification.
Zhen An can provide quality control support, including:
- Si content testing
- Al and Ca control
- C, P and S inspection
- particle size screening
- powder and 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.
Send us your detailed requirement, and we will arrange sample delivery for your evaluation.
About Us
ZHEN AN INTERNATIONAL CO.,LIMITED
ZHENAN supplies Ferro Silicon 72, Ferro Silicon 75, silicon magnesium alloy, silicon calcium alloy, silicon carbide, cored wire and other foundry and metallurgical materials.
For Standard Grade Ferro Silicon 72 for Foundry, Zhen An focuses on stable silicon content, suitable particle size, low powder content and export-ready packing. Since foundry use depends on cast iron type, feeding method and production rhythm, we usually suggest buyers confirm particle size, application and inspection requirements before ordering.
Batch COA can be provided, and third-party inspection is accepted before shipment when required.
FAQ
Q:What is Ferro Silicon FeSi 72 used for in foundry production?
A:Ferro Silicon FeSi 72 is used as a silicon source and inoculation support material in gray iron, ductile iron and general cast iron production.
Q:What is the silicon content of FeSi 72?
A:FeSi 72 usually contains about 70–75% silicon. Final values should be confirmed by batch COA and customer requirements.
Q:Is FeSi 72 suitable for gray iron?
A:Yes. FeSi 72 is commonly used in gray iron production to adjust silicon content and support graphite formation.
Q:Can FeSi 72 be used in ductile iron?
A:Yes. FeSi 72 can be used in ductile iron production as a silicon source and inoculation support material, but it is not a replacement for nodulizer.
Q:What particle size is best for foundry FeSi 72?
A:Common sizes include 1–3mm, 3–10mm and 10–50mm. The best size depends on the foundry's feeding method, ladle size and melting practice.
Q:What is the difference between FeSi 72 and FeSi 75?
A:FeSi 72 is a standard grade with about 70–75% silicon and is often used for routine foundry applications. FeSi 75 provides higher silicon input and may be selected for higher-demand applications.
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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