Alloys and Inoculants
HC and LC Ferromanganese
High-carbon (HC) and low-carbon (LC) ferromanganese for manganese adjustment in steel and cast iron.
High-carbon ferromanganese (HC FeMn) contains roughly 70-80 percent manganese. It is used for manganese alloying and deoxidation in steel castings and for manganese adjustment in cast iron to promote pearlitic structure and strength. Manganese also binds sulphur as MnS.
Because of the high carbon content, the carbon contribution of the HC grade must be taken into account in low-carbon steel grades. In these grades low-carbon (LC) ferromanganese, which contributes very little carbon, is preferred, although it costs more than the HC grade. Manganese recovery in furnace additions depends on bath temperature and addition timing.
Phosphorus can vary from lot to lot, so the analysis certificate should be checked for castings with phosphorus limits.
Typical chemical analysis (%)
| Manganese (Mn), HC | 70-80 |
|---|---|
| Carbon (C), HC | 6,0-8,0 |
| Carbon (C), LC | ≤ 0,75 |
| Silicon (Si), HC | ≤ 2,0 |
| Phosphorus (P), HC | ≤ 0,40 |
| Sulphur (S), HC | ≤ 0,03 |
Typical ranges. Exact values are given in the analysis certificate of each lot.
Product details
- Grades
- HC (high carbon) and LC (low carbon)
- Grain size
- 10-50 mm, 3-10 mm; on request
- Packing
- 1 tonne big bag, 25 kg bag
- LC analysis
- With an analysis certificate per lot
Applications
- Manganese alloying and deoxidation in steel casting
- Manganese adjustment in cast iron (pearlitic matrix)
- Wear-resistant manganese steel grades
- Manganese adjustment in low-carbon steel grades with the LC grade