The Ultimate Guide to EMM Flakes Specifications: Mn99.70, Mn99.80, and Mn99.95
Mn99.70, Mn99.80 and Mn99.95 EMM flakes are different in manganese purity and impurity control.
Mn99.70 is usually enough for regular steelmaking, stainless steel, welding materials and general metallurgical addition. Mn99.80 is more suitable when your alloy formula needs cleaner C, S, Si and Se control. Mn99.95 is used for precision alloy production and high-purity material systems, where trace elements such as P, Si and Se must stay very low.
For normal stainless steel use, Mn99.70 is often the practical choice.
For non-ferrous alloys or stricter formulas, check Mn99.80.
For precision alloy or high-purity applications, compare Mn99.95 by shipment batch COA.
Comparison: Mn99.70, Mn99.80 and Mn99.95
The table below shows the key difference between the three common EMM flakes grades. Do not look only at Mn content. For real production, C, S, P, Si and Se often decide whether the grade fits your process.
| Model | Mn ≥ | C ≤ | S ≤ | P ≤ | Fe ≤ | Si ≤ | Se ≤ |
|---|---|---|---|---|---|---|---|
| Mn99.95 | 99.95% | 0.01% | 0.03% | 0.001% | 0.006% | 0.002% | 0.0003% |
| Mn99.80 | 99.80% | 0.02% | 0.03% | 0.005% | 0.003% | 0.005% | 0.06% |
| Mn99.70 | 99.70% | 0.04% | 0.05% | 0.005% | 0.003% | 0.010% | 0.10% |
Final chemical composition should follow the contract specification and shipment batch COA.
| Grade | Best Fit | Main Reason |
|---|---|---|
| Mn99.70 | Regular steelmaking, stainless steel, welding materials, general metallurgical use | Practical cost and enough Mn purity for standard applications |
| Mn99.80 | Non-ferrous alloy, special alloy formulas, cleaner Mn addition | Lower C, S, Si and Se than Mn99.70 |
| Mn99.95 | Precision alloy, high-purity materials, trace-element-sensitive production | Tight control of P, Si, Se and other trace elements |
Application Guide: Match the Grade with Your Production Need
Mn99.70: Cost-Effective Grade for Regular Metallurgical Use
Mn99.70 is the most practical grade when your production needs stable manganese input without paying for unnecessary high-purity control.
It is commonly used for:
- steelmaking
- stainless steel production
- welding materials
- general alloy adjustment
- metallurgical manganese addition
The key advantage is cost performance. You get Mn 99.70% min, and the impurity limits are usually enough for regular industrial use. When your formula can accept its C, S, P, Fe, Si and Se range, Mn99.70 is often the most reasonable choice.
Mn99.80: Cleaner Option for Non-Ferrous Alloy and Special Formulas
Mn99.80 is the middle grade. It gives cleaner impurity control than Mn99.70, but it does not jump directly to Mn99.95 cost level.
This grade is worth checking when your production involves:
- non-ferrous alloy formulas
- special alloy materials
- tighter C or S control
- stricter Fe or Si balance
- cleaner manganese addition than Mn99.70 can offer
For many alloy plants, Mn99.80 is useful because it reduces impurity pressure without over-specifying the material.
Mn99.95: High-Purity Grade for Precision Alloy Production
Mn99.95 is not a grade for every order. It is used when your process needs strict trace element control.
Choose Mn99.95 when you work with:
- precision alloy production
- high-purity material systems
- small-batch formula preparation
- trace-element-sensitive applications
- formulas with strict P, Si or Se limits
The value of Mn99.95 is not just "higher Mn." Its value is a much narrower impurity window. When small changes in P, Si or Se can affect the final material standard, Mn99.95 gives your technical team a cleaner manganese source to work with.
Why Impurities Matter: S, P, Se and Other Elements
Many purchasing discussions start with Mn purity. That is normal, but it is not enough.
In real use, unwanted elements can create more trouble than a small difference in Mn content.
Carbon: Important for Low-Carbon Control
Carbon becomes important when your production needs low-carbon control. Mn99.70 allows higher C than Mn99.80 and Mn99.95. For regular metallurgical addition, this may be acceptable. For stricter alloy formulas, lower C input helps reduce later correction work.
Sulfur and Phosphorus: Small Numbers, Big Impact
S and P should never be ignored.
Excess sulfur can affect material cleanliness and processing stability. Phosphorus is often restricted because it can increase brittleness in steel and alloy systems. This is why Mn99.95, with P ≤ 0.001%, has value in precision alloy production.
For ordinary production, Mn99.70 may work well. For more sensitive formulas, S and P limits should be checked before price comparison.
Fe and Si: More Sensitive in Non-Ferrous Alloy Work
Fe and Si may be acceptable in many steelmaking routes. In non-ferrous alloy production, they can become more sensitive.
If your formula already controls Fe or Si closely, a manganese source with lower impurity input helps reduce composition drift. This is where Mn99.80 often becomes a better choice than Mn99.70.
Se: Often Overlooked, But Critical in High-Purity Orders
Se is not always the first item people ask about. But in high-purity and specialty alloy applications, Se may be tightly restricted.
Mn99.95 has a much lower Se limit than Mn99.70 and Mn99.80. This is one of its main advantages for precision alloy and trace-element-sensitive material systems.
Physical Specification: Why 1–2mm Flakes Are Common
EMM flakes are usually supplied as silver-gray irregular flakes. A common export size is 1–2mm.
This size is practical for production because it supports:
easier weighing
smoother batch preparation
more controlled addition
less dust trouble than fine powder
easier warehouse handling than large irregular pieces
Consistent 1–2mm sizing helps the material behave more predictably before it reaches the furnace or mixing process. It does not replace proper melt practice, but it can reduce handling loss and batching problems.
During long transport, small flakes may generate fines if bags are weak or handled roughly. For this reason, flake size, powder content, bag strength and packing marks should be confirmed before shipment when your process is sensitive to fines.
Packaging & Logistics: Batch Marks, Packing and Export Details
Regular export packing for EMM flakes is usually 1MT jumbo bag. For smaller batch use or cleaner handling, 25kg bags, drums or pallet packing can also be discussed.
| Packing Method | Best Used For | What We Confirm Before Shipment |
|---|---|---|
| 1MT jumbo bag | Regular bulk export shipment | Bag marks, batch number, loading photos |
| 25kg bags | Manual weighing and small-batch use | Inner packing, label details, outer bag condition |
| Drums | Cleaner storage and stronger protection | Drum marks, sealing condition, pallet option |
| Pallet packing | Easier unloading and warehouse storage | Pallet condition, loading layout, packing photos |
| Custom labels / shipping marks | Grade separation and batch tracking | Mn99.70 / Mn99.80 / Mn99.95 labels, order number, batch information |
For 1–2mm flakes, packing should reduce leakage, bag damage and excessive fines during transport. For high-purity material such as Mn99.95, clear grade marking is especially important. The grade mark, batch number, packing label and shipment documents should match the same order.
Before loading, we can help you confirm:
grade and batch number
- flake size and powder condition
- packing method and bag marks
- product labels and shipping marks
- COA, MSDS, packing list and invoice
- packing photos or loading photos if required
What We Can Supply
We supply Mn99.70, Mn99.80 and Mn99.95 EMM flakes for steelmaking, stainless steel, non-ferrous alloy, welding materials and precision alloy production.
You can confirm:
- EMM flakes grade and available batch
- chemical composition by shipment batch COA
- 1–2mm flakes or order-based size
- 1MT jumbo bag, 25kg bag, drum or pallet packing
- COA, MSDS, packing list and invoice
- FOB, CIF or CFR quotation by destination port
- third-party inspection when required
FAQ About EMM Flakes Specifications
Q:Do I have to buy the most expensive Mn99.95 grade?
A:No. Mn99.95 is only necessary when your formula needs very strict trace impurity control. If Mn99.70 already meets your technical standard, buying Mn99.95 may only increase cost.
Q:Which grade is enough for regular stainless steel?
A:Mn99.70 is often enough for regular stainless steel and general metallurgical addition. You still need to check C, S, P, Fe, Si and Se based on your formula.
Q:When should I move from Mn99.70 to Mn99.80?
A:Move to Mn99.80 when your formula becomes more sensitive to C, S, Si or Se. It is a better choice for non-ferrous alloy or stricter alloy formulas.
Q:Why is Mn99.95 used in precision alloy production?
A:Mn99.95 has the tightest impurity control among the three common grades. It is useful when P, Si, Se or other trace elements must stay very low.
Q:Does 1–2mm flake size matter?
A:Yes. 1–2mm flakes are easier to weigh, batch and handle than large irregular pieces. They also create less dust trouble than fine powder.
Q:What should I confirm before buying EMM flakes?
A:Confirm grade, flake size, powder content, impurity limits, packing method, shipment documents, shipment term and destination port.
Q:Can you provide COA and MSDS?
A:Yes. COA, MSDS, packing list, commercial invoice and other export documents can be prepared according to your order requirement.
