Quick Answer
99.70% electrolytic manganese metal flakes are mainly used as a clean manganese source in steelmaking, stainless steel, alloy production, welding materials and metallurgical additives.
The common 1–2mm flake size is easy to weigh, batch and add during production. Compared with ferro manganese or silicon manganese, Mn99.70 EMM flakes provide higher manganese content and lower impurity input. This makes them useful when your process needs manganese adjustment with better control of C, S, P, Fe, Si and Se.
For regular steelmaking and alloy production, Mn99.70 is often the most practical grade because it balances purity, cost and industrial usability.
What Are 99.70% Electrolytic Manganese Metal Flakes?
99.70% electrolytic manganese metal flakes, also called Mn99.70 EMM flakes, are high-purity manganese metal flakes produced by electrolytic processing. The grade means the manganese content is 99.70% minimum.
They are usually silver-gray irregular flakes. A common export size is 1–2mm. This size is widely used because it is small enough for batching and weighing, but not as dusty as fine manganese powder.
For production teams, this matters. Large pieces can be harder to dose accurately. Fine powder can create dust loss and feeding trouble. 1–2mm flakes sit between these two forms and work well for regular industrial addition.
Typical Mn99.70 Specification
| Item | Mn99.70 Reference | Why It Matters |
|---|---|---|
| Mn | ≥ 99.70% | Main manganese input |
| C | ≤ 0.04% | Helps control unwanted carbon |
| S | ≤ 0.05% | Important for cleaner metallurgical control |
| P | ≤ 0.005% | Helps reduce phosphorus pressure |
| Fe | ≤ 0.003% | Limits extra iron input |
| Si | ≤ 0.010% | Useful when silicon balance matters |
| Se | ≤ 0.10% | Checked when your standard includes Se |
Final values should follow the contract and shipment batch COA.
Main Uses of 99.70% EMM Flakes
1. Steelmaking: Clean Manganese Addition
In steelmaking, manganese is used to adjust composition and support metallurgical control. Mn99.70 EMM flakes are useful when you need manganese addition without bringing in too much extra carbon, silicon or other alloying elements.
Compared with ferro manganese or silicon manganese, electrolytic manganese flakes give you a more direct Mn source. This helps when your process already controls other elements tightly and only needs manganese adjustment.
For steel plants, the most important points are:
- Mn content stability
- C, S and P limits
- flake size and powder condition
- batch COA
- packing and loading condition
When these details are clear, your production team can use the material with fewer surprises.
2. Stainless Steel: Mn Addition with Lower Impurity Pressure
In stainless steel production, manganese can support composition adjustment and, in some grades, help optimize alloy cost and performance. 99.70% EMM flakes are often considered when you need manganese input with lower impurity pressure.
For regular stainless steel use, Mn99.70 is often enough. You do not always need Mn99.80 or Mn99.95. The key is whether the C, S, P, Fe, Si and Se values match your internal formula.
If your process is sensitive to carbon or sulfur, check the actual COA before purchase. Do not rely only on a general specification sheet.
3. Alloy Production: More Predictable Formula Adjustment
Alloy plants use Mn99.70 EMM flakes when they need a controlled manganese source for formula adjustment. The 1–2mm flake form is useful for weighing, batching and material preparation.
In alloy production, the problem is often not "how much Mn can this material provide?" The real question is whether the material brings unwanted elements into the formula.
Mn99.70 flakes help reduce this risk compared with many mixed manganese materials. This is why they are often used for alloy production when the formula needs cleaner Mn input but does not require ultra-high-purity Mn99.95.
4. Aluminum Alloy and Non-Ferrous Alloy Use
In some non-ferrous alloy systems, manganese helps adjust mechanical properties and improve alloy performance. When Fe and Si balance matters, the manganese source should be selected carefully.
Mn99.70 can be used when the formula accepts its impurity range. If your non-ferrous alloy has stricter Fe, Si or Se limits, Mn99.80 may be worth comparing. For high-purity systems, Mn99.95 is usually the grade to evaluate.
This is why grade selection should follow the formula, not only the price.
5. Welding Materials and Metallurgical Additives
Manganese is also used in welding material formulations and metallurgical additives. In these applications, Mn99.70 flakes provide stable manganese content and practical handling.
The 1–2mm size is easier to dose than large pieces and cleaner than powder in many workshop conditions. If your production uses small-batch preparation, this flake size can reduce weighing and feeding trouble.
Why 99.70% Is the Mainstream Industrial Grade
Mn99.70 is popular because it gives a good balance between purity and cost.
You can think of the three common EMM grades this way:
| Grade | Best Used When |
|---|---|
| Mn99.70 | You need regular industrial manganese addition with good cost control |
| Mn99.80 | Your alloy formula needs cleaner C, S, Si or Se control |
| Mn99.95 | Your process needs high-purity manganese and strict trace element limits |
For regular steelmaking, stainless steel, welding materials and common alloy production, Mn99.70 often meets the requirement. Buying a higher grade only makes sense when your formula needs it.
That is the most practical point for procurement: do not pay for purity you do not need, but do not choose a low grade if your formula cannot tolerate the impurities.
Why C, S and P Still Matter
Many inquiries only ask for "99.70% manganese flakes." That is not enough.
For real production, you should also pay attention to C, S and P.
Carbon matters when your steel or alloy formula needs low-carbon control. If carbon input is already tight, you need to check the C value carefully.
Sulfur can affect cleanliness and processing stability. A higher sulfur level may create trouble in sensitive metallurgical systems.
Phosphorus is often restricted because it can increase brittleness in steel and alloy products. Even small differences matter when your formula has a strict P limit.
Se, Fe and Si should also be checked when your product standard controls trace elements or alloy balance.
A good supplier should not only quote the price. We should help you check whether the batch data fits your application.
Why 1–2mm Flakes Are Practical for Production
The 1–2mm size is not just a packaging detail. It affects how the material behaves before it enters your process.
A suitable flake size helps with:
- weighing accuracy
- batch preparation
- faster material handling
- lower dust trouble than powder
- easier storage than very fine particles
- more consistent addition than random large pieces
In actual shipment, small flakes may generate fines if bags are weak or handled roughly. For this reason, you should confirm flake condition, powder content and bag strength before loading when your process is sensitive to fines.
What We Can Supply
We supply Mn99.70 electrolytic manganese metal flakes for steelmaking, stainless steel, alloy production, welding materials and metallurgical applications.
For export orders, we can help you confirm:
- Mn99.70 grade and available batch
- 1–2mm flake size or order-based size
- C, S, P, Fe, Si and Se limits
- 1MT jumbo bag, 25kg bag, drum or pallet packing
- COA, MSDS, packing list and invoice
- FOB, CIF or CFR quotation by destination port
- packing photos or loading details if required
If you need the latest FOB Tianjin price or a specification check for your formula, send us your grade, size, quantity and destination port.
FAQ About 99.70% EMM Flakes Uses
Q:What are EMM flakes used for?
A:EMM flakes are used for steelmaking, stainless steel production, alloy production, welding materials and metallurgical manganese addition. They provide high-purity manganese input with lower impurity levels than many manganese alloys.
Q:Are 99.70% EMM flakes suitable for regular steelmaking?
A:Yes. Mn99.70 is commonly used for regular steelmaking and metallurgical addition when the process needs stable manganese input and practical cost control.
Q:Why choose 1–2mm manganese flakes?
A:1–2mm flakes are easier to weigh, batch and handle than large irregular pieces. They also create less dust trouble than fine powder.
Q:Should I choose Mn99.70 or Mn99.80?
A:Use Mn99.70 when your formula accepts regular industrial impurity limits. Compare Mn99.80 if your process needs lower C, S, Si or Se control.
Q:What should I check before buying manganese flakes?
A:Check Mn content, C, S, P, Fe, Si, Se, flake size, powder content, packing method, shipment documents and destination port.
Q:Can you provide COA and MSDS?
A:Yes. COA, MSDS, packing list, invoice and other export documents can be prepared according to your order requirement.
