Electrolytic Manganese Metal Flake 99.9% | Mn99.9

 

Mn99.9 Electrolytic Manganese Metal Flake is an electrolytic manganese grade with Mn ≥99.90% and controlled C, S, P, Fe and Si impurities.

Choose Mn99.9 when your purchase specification requires a higher manganese minimum or tighter impurity control than a standard Mn99.7 or Mn99.8 grade. The important purchasing decision is not simply whether one grade is "higher purity", but whether its actual Mn, P, Fe, Si, C and S limits match your production requirement.

Our standard electrolytic manganese product line is supplied in flake form, with a typical flake size of 1–2 mm. For every order, the required chemistry, particle size, packing, quantity and inspection documents should be confirmed before shipment.

You can also compare Mn99.7 electrolytic manganese flake, Mn99.8 electrolytic manganese flake and our complete electrolytic manganese metal range before selecting a grade.

 

The following chemistry is the current reference specification for Mn99.9 electrolytic manganese metal flake.

Grade	Mn	C Max.	S Max.	P Max.	Fe Max.	Si Max.
Mn99.9	≥99.90%	≤0.02%	≤0.03%	≤0.005%	≤0.01%	≤0.005%
Form	Electrolytic manganese metal flakes
Typical Flake Size	1–2 mm

If your internal specification uses different limits, send the exact Mn, C, S, P, Fe and Si requirements before quotation. The applicable batch should then be compared with the confirmed specification and COA.

 

Mn99.9 is not automatically the best grade for every manganese application. It is most relevant when your purchasing or production standard specifically requires the higher Mn minimum or tighter control of individual impurities.

Your Requirement	What to Consider
Mn must be ≥99.90%	Mn99.9 directly matches this minimum manganese requirement.
P must be tightly controlled	Compare the required P ceiling with the Mn99.9 reference of ≤0.005%.
Fe input is restricted	Check whether Fe ≤0.01% meets your internal specification.
Si input is restricted	Compare your requirement with Si ≤0.005%.
Your process only requires Mn99.7 or Mn99.8	A higher-purity grade may not be necessary. Compare the actual specification and cost basis before upgrading the grade.

This is why we recommend selecting electrolytic manganese by the complete chemical specification rather than by the highest available Mn percentage.

 

The most obvious difference between these grades is their minimum manganese content. But for industrial purchasing, the more useful comparison is the complete impurity profile required by your process.

Grade	Minimum Mn	Purchasing Focus
Mn99.7	≥99.7%	Use when your specification accepts the standard Mn99.7 grade and its applicable impurity limits.
Mn99.8	≥99.8%	Intermediate option when your chemistry requires a higher Mn minimum than Mn99.7.
Mn99.9	≥99.90%	Use when your purchase specification requires the Mn99.9 chemistry and tighter impurity control.

Do not assume that moving from Mn99.7 to Mn99.9 automatically improves every process. Select the grade that matches your required chemistry and acceptance limits.

 

Phosphorus: ≤0.005%

Phosphorus has a relatively tight limit in the current Mn99.9 specification. If P is controlled in your steel or alloy chemistry, state the maximum acceptable value directly in the RFQ and check it again on the batch COA.

Iron: ≤0.01%

Iron should be treated as an independent acceptance item rather than being assumed from total Mn purity. Compare the actual Fe result with your purchase specification.

Silicon: ≤0.005%

If silicon addition needs to remain controlled in your process, confirm the maximum Si value before order approval.

Carbon and Sulfur

The current reference limits are C ≤0.02% and S ≤0.03%. If your internal specification is tighter, provide your own limits before quotation.

 

Alloy Steel Production

Mn99.9 can be used as a manganese-bearing raw material when your alloy steel specification requires high manganese purity and controlled Fe, P, Si, C and S input.

200-Series Stainless Steel

Electrolytic manganese metal is also used in manganese-bearing stainless steel production. If your 200-series stainless steel route requires Mn99.9, confirm the complete chemistry rather than selecting the material only from its nominal manganese percentage.

Metallurgical Alloy Adjustment

Mn99.9 can also be considered where manganese needs to be added under a defined impurity specification. The appropriate addition quantity should be determined from your starting chemistry and target composition.

The grade should therefore be selected from your process specification, not from a general statement such as "higher purity is always better."

 

For Mn99.9, batch acceptance should be based on the chemistry agreed before shipment rather than the product name alone.

We can provide a Certificate of Analysis (COA) showing the applicable manganese content and controlled impurity results. Third-party inspection can also be arranged when required by your order.

Acceptance Step	What to Check
1. Purchase Specification	Confirm Mn, C, S, P, Fe and Si limits before the order is finalized.
2. Batch Identification	Make sure the quality document corresponds to the supplied batch.
3. COA Review	Compare each reported result with the agreed maximum or minimum.
4. Third-Party Inspection	Confirm the required sampling and inspection scope before shipment if third-party verification is needed.

 

Mn99.9 is supplied in electrolytic flake form rather than as large ferroalloy lumps. The standard product line uses approximately 1–2 mm flakes.

If your feeding system requires a defined size tolerance, maximum fines content or another physical specification, include that requirement in the inquiry instead of relying only on the term "manganese flake."

Packing should also be confirmed according to your order quantity, storage and unloading requirements.

 

Grade-Specific Confirmation

We confirm the Mn99.9 chemistry required for your order rather than treating Mn99.7, Mn99.8 and Mn99.9 as interchangeable manganese flakes.

Batch Quality Documentation

COA can be supplied for batch chemistry verification. If your quality procedure requires third-party sampling or inspection, state the requirement before shipment.

Specification-Based Quotation

Your quotation can be prepared according to the required grade, chemistry, quantity, packing, destination and inspection requirements instead of using a generic manganese price basis.

 

RFQ Item	Information to Provide
Grade	Mn99.9 / EMM 99.9%
Mn	Required minimum manganese content
Impurities	Maximum C, S, P, Fe and Si limits
Physical Form	Electrolytic manganese flakes and required size tolerance
Quantity	Trial or bulk order quantity
Packing	Required packing method
Destination	Destination port
Incoterm	FOB / CFR / CIF or other agreed term
Documents	COA / third-party inspection / other required documents

 

 

Send us your Mn99.9 chemistry requirement, quantity, flake-size requirement, packing and destination port.

If P, Fe, Si or another impurity has a tighter internal limit, include the exact value in your inquiry. We can then confirm the applicable material and prepare the quotation on the same technical basis.

Request Mn99.9 Quote