10-50mm 70% Ferro Silicon for Foundry
Supply 70% ferro silicon 10–50mm for foundry use. Stable silicon content, regular particle size, 1 MT jumbo bag packing, COA/MSDS and export documents available.
70% silicon content for foundry silicon adjustment
10–50mm regular size for easier weighing and furnace feeding
Suitable for cast iron production and foundry melting processes
COA, MSDS, packing photos and export documents available before shipment
1 MT jumbo bag packing, pallet packing available on request
70% silicon content for foundry silicon adjustment
10–50mm regular size for easier weighing and furnace feeding
Suitable for cast iron production and foundry melting processes
COA, MSDS, packing photos and export documents available before shipment
1 MT jumbo bag packing, pallet packing available on request
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Product Introduction
10-50mm 70% Ferro Silicon Description
70% Ferro Silicon belongs to essential ferroalloy raw materials, mainly serving as silicon supplement agent in casting manufacturing. During cast iron smelting, precise control of silicon proportion is critical, as it directly influences the internal structure, mechanical performance of finished castings and the overall stability of production operation.
We provide 70% Ferro Silicon with particle size of 10–50mm, perfectly matching the procurement demands of foundry factories that pursue uniform grain size, steady silicon composition and convenient bulk feeding. This ferroalloy delivers efficient silicon supplementation effect, outperforming low-grade ferrosilicon products in silicon supplement capacity. Meanwhile, for foundry production lines with no strict requirement for FeSi75 high-grade standard, 70% Ferro Silicon stands out as a cost-effective and applicable alternative.
Our 10–50mm grain specification features great convenience in weight measurement, warehouse storage and furnace feeding operation. It avoids the irregularity of super large bulk materials and the handling trouble of fine powder materials, enabling foundry staff to complete material feeding work more efficiently and stably in the smelting process.
We support customized delivery standards based on customer demands. Prior to delivery, we can arrange verification on silicon composition, particle size specification, packaging solution and provide official COA documents. If your factory has strict control indicators on trace elements like aluminum, carbon, sulfur and phosphorus, kindly share your internal quality standard with us, and we will offer a targeted formal quotation accordingly.
The Specification of 10-50mm 70% Ferro Silicon
| Item | Specification |
|---|---|
| Product Name | 70% Ferro Silicon |
| Common Grade | FeSi70 |
| Silicon Content | 70.0% Min |
| Aluminum | 2.0% Max, or confirm by order |
| Carbon | 0.20% Max |
| Sulfur | 0.04% Max |
| Phosphorus | 0.04% Max |
| Size Range | 10–50mm |
| Other Size Options | Can be discussed according to stock |
| Appearance | Grey metallic lump / granule |
| Main Use | Silicon adjustment for foundry melting and cast iron production |
| Standard Packing | 1 MT jumbo bag |
| Optional Packing | Pallet packing, small bags, or customized export packing |
| Documents | COA, MSDS, packing list, commercial invoice |
| Loading Support | Packing photos and loading photos available if required |
| MOQ | 1 MT, trial order can be discussed according to stock |
| Trade Terms | FOB, CIF, CFR according to destination port |
If your casting process has stricter requirements for aluminum, sulfur, phosphorus or particle size, please send your required standard before quotation. We can check the available COA and confirm whether the material matches your foundry use.
Why Foundries Use 70% Ferro Silicon
In foundry production, irregular ferro silicon lumps can cause uneven feeding, unstable silicon adjustment, and extra handling work. Oversized lumps are harder to add into the furnace, while fine powder may create more dust during daily operation.
For this reason, many foundries choose 70% Ferro Silicon 10–50mm. The 70% silicon content supports cast iron silicon adjustment, and the 10–50mm size is easier to weigh, store, and feed during batch melting.
One of our foundry customers in Southeast Asia previously used irregular ferro silicon lumps and had difficulty controlling batch addition. After checking their furnace feeding method and required silicon range, we recommended FeSi70 10–50mm with 1 MT jumbo bag packing. Before shipment, we confirmed the COA, size range, and packing photos.
After switching to the regular 10–50mm material, their feeding became easier, silicon adjustment was more stable, and daily storage and weighing were more convenient.
For foundry buyers, the main benefit is clear: less feeding trouble, better melting control, more stable silicon addition, and easier daily operation.
Common Questions About 70% Ferro Silicon for Foundry Use
Q: What is 70% Ferro Silicon used for in foundry production?
A: It is used as a silicon additive in cast iron melting and foundry production. It helps adjust silicon content and supports more stable casting preparation.
Q: Why choose FeSi70 instead of FeSi65?
A: FeSi70 has higher silicon content than FeSi65, so it can provide stronger silicon addition when the foundry process needs a higher silicon input.
Q: Is FeSi70 always better than FeSi75?
A: Not always. FeSi75 has higher silicon content, but FeSi70 can be more practical when your process does not require the highest common silicon grade and you want better cost control.
Q: Is 10–50mm suitable for foundry furnace feeding?
A: Yes. 10–50mm is a practical size for weighing, storage and batch addition in foundry use. Other sizes can also be discussed according to your feeding method.
Q: Can I check chemical composition before shipment?
A: Yes. We can provide COA before shipment. If you have specific limits for Si, Al, C, S or P, please send them before placing the order.
Q: How do you pack 70% ferro silicon?
A: Standard packing is 1 MT jumbo bag. Pallet packing, small bags or customized export packing can be arranged according to your requirements.
Q: What information should I send for quotation?
A: Please send the required grade, size range, order quantity, packing method, destination port and any special impurity limits.
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