Ferro Alloys / FeMn
Ferro Manganese
Primary manganese source for deoxidation and alloying in steel production.
Technical Specifications
Key Features
- High manganese content (75-80% Mn)
- HC, MC, and LC grade options
- Strong deoxidant property
- Provides hardness and toughness to steel
- Wide grain size range
Applications
- Deoxidation in steel production
- Alloy steel manufacturing
- Hadfield steel production
- Cast iron metallurgy
- Welding electrode manufacturing
Dimension Table
| Element | Min. | Max. | Typical |
|---|---|---|---|
| Mn | 75 | 80 | 78 |
| C | 0.50 | 8.0 | 6.5 (HC) / 1.5 (MC) / 0.50 (LC) |
| Si | 0 | 2.0 | 1.0 |
| P | 0 | 0.30 | 0.20 |
| S | 0 | 0.03 | 0.02 |
| Fe | - | - | Balance |
Technical Notes
- 01HC grade used for general steel deoxidation.
- 02MC and LC grades preferred for low carbon steel production.
- 03Fine grains for induction furnaces, coarse grains for arc furnaces.
- 04Keep away from moisture and heat.
What are ferroalloys?
Ferroalloys are master alloys of iron with a high share of an alloying element (Si, Mn, Cr, Mo, V...): e.g. FeSi75 (72–80% Si), high-carbon FeMn (75–80% Mn), FeCr. They are added to the melt in steelworks and foundries for deoxidation, alloying and inoculation. Using a ferroalloy instead of the pure element is cheaper and dissolves more readily in the melt.
Main ferroalloys and their roles
FeSi (ferrosilicon): the workhorse deoxidizer and Si source in steel; the 75% grade is standard and is also the base of foundry inoculants. FeMn (ferromanganese): deoxidation, sulphur fixing as MnS and Mn alloying; available in high/medium/low-carbon grades. FeCr (ferrochrome): the Cr source for stainless and alloy steels. FeSiMg (ferrosilicon magnesium): nodularizes graphite in ductile iron. Sizing (lump/granule) and addition point (furnace/ladle/cored wire) determine recovery; chemistry is verified by certificate.
Frequently Asked Questions
What is ferrosilicon used for?+
Deoxidation and silicon alloying in steel, and as the base of foundry inoculants. The standard grade is FeSi75 (72–80% Si).
What is ferromanganese used for?+
Deoxidation, fixing sulphur as MnS and manganese alloying. It comes in high-, medium- and low-carbon grades.
Why add a ferroalloy instead of the pure element?+
Lower cost, lower melting point and faster, more efficient dissolution in the melt.
What is FeSiMg (ferrosilicon magnesium)?+
A magnesium-carrying ferroalloy that converts graphite to spheroidal form (nodularizing) in ductile-iron production.
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