FeSi75 Ferro Silicon Alloy | Si ≥75% Specification

 

FeSi75 ferro silicon alloy is supplied with a minimum silicon content of 75%. For industrial purchasing, the important point is not whether the product is described as "high-end" or "high quality," but whether the delivered batch matches the chemical limits written into your order.

On this product, the reference limits include Si ≥75%, Al ≤2.0%, P ≤0.04%, S ≤0.02% and C ≤0.20%. We recommend confirming these values together with the required particle size and batch document requirements before quotation.

Other grades and physical forms are available in our ferrosilicon product range .

 

The following values are the reference specification for this FeSi75 product. If your steel plant or foundry uses tighter limits, send those values before the order is confirmed. The agreed purchase specification should then be used as the basis for reviewing the applicable batch COA.

FeSi75 Item	Reference Specification	Order Confirmation
Si	≥75%	Confirm the minimum Si required by your specification
Al	≤2.0%	State a lower maximum if aluminum is tightly controlled
P	≤0.04%	Use the purchase-order limit for batch acceptance
S	≤0.02%	Confirm the required maximum before quotation
C	≤0.20%	Check against the applicable raw-material standard
Particle Size	10-50mm / 50-100mm	Confirm the required nominal range in the order

Particle size is listed here as a purchasing parameter only. If your main requirement is dimensional acceptance of 50-100mm material, see our FeSi75 50-100mm specification .

 

The purchase specification and the batch COA should not be treated as the same document. Your purchase specification defines the chemistry that the material must meet. The COA records the measured values for the batch being supplied.

For example, an order may require Si ≥75%. The COA should then show the actual Si result for the relevant batch so that it can be compared with the 75% minimum.

The same logic applies to Al, P, S and C. A historical COA value should not be copied back into a new purchase order and treated as a permanent specification unless that limit has actually been approved for the new order.

 

A useful FeSi75 COA should be connected to the material you actually receive. When batch-level verification is required, the product grade, batch or lot identification and chemical analysis should be reviewed together rather than checking an isolated chemistry table with no clear shipment reference.

Match the FeSi75 Batch Number with the Applicable COA

Before using a COA for acceptance, confirm that the document belongs to the FeSi75 batch prepared for your shipment. This is especially useful when several ferro silicon grades or production lots are handled during the same period.

Keep FeSi75 Contract Limits Consistent Across Repeat Orders

If repeat shipments must follow the same chemistry, keep one approved set of Si, Al, P, S and C limits as the purchasing basis. Each new batch can then be checked against the same requirement instead of comparing it only with previous supplier tables.

 

If your purchasing procedure includes sampling or retesting, define the requirement before shipment. This avoids disagreement after the material has already been produced or delivered.

Define FeSi75 Sampling Requirements Before Shipment

When chemical verification is required, specify which elements need to be tested and whether the result must come from the supplier batch report or another agreed inspection route.

Define FeSi75 Retest Conditions in the Purchase Requirement

If your procedure requires a retest when a result is close to or outside an agreed limit, include that requirement in the order documentation. The acceptance method should be clear before the batch is released.

 

If third-party inspection is required for the FeSi75 order, confirm the inspection scope before production or loading. The request should identify what needs to be verified rather than simply stating "third-party inspection required."

For example, the agreed scope may include chemical analysis review, document verification or another inspection item specified by your purchasing procedure.

If SGS, BV or another inspection organization is required, tell us the required inspection scope when sending the inquiry so it can be considered as part of the order requirement.

 

For chemistry-controlled FeSi75 orders, the batch COA or applicable chemical test report is the main document used to compare the supplied material with the agreed chemical limits.

If your purchasing procedure also requires an MTC, SDS/MSDS or third-party inspection document, include these requirements before shipment. This makes the documentation part of the purchase specification rather than an additional request after loading.

 

 

 

If you already have an approved FeSi75 specification, send the complete chemistry requirement instead of only asking for "FeSi75 price." This gives us a clearer basis for checking the applicable material and batch documents.

Send FeSi75 Chemical Specification

 

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