High carbon ferromanganese is used to produce special manganese alloys.
Group | Weight percentage of an element, % | ||||||
Alloy base | Manganese | Carbon | Silicon | Phosphor | Sulphur | ||
А | B | ||||||
No more than | |||||||
Low carbon | FeMn90 | 85,0 to 95,0 incl. | 0,5 | 1,8 | 0,05 | 0,30 | 0,03 |
Middle carbon | FeMn88 | Св. 85,0 to 95,0 incl. | 2,0 | 3,0 | 0,10 | 0,40 | 0,03 |
High carbon | FeMn78
FeMn70 | Св. 75,0 to 82,0 incl. Св. 65,0 to 75,0 incl./p> | 7,0
7,0 | 6,0
6,0 | 0,05
0,30 | 0,70
0,70 | 0,03
0,03 |
Note. Letters in the alloy base grade mean: Fe – ferrum (iron), Mn – manganese; figures following the letters – an average mass manganese weight in integral numbers. |
Alloy base grade | Weight percentage of elements, % | |||||
Manganese, No more than | Carbon | Silicon | Phosphor | Sulphur | Nitrogen | |
No more than | ||||||
FeMnN-SmL FeMnN-ST1 FeMnN-ST2 | 80,0 78,0 78,0 | 0,5 0,5 2,0 | 2,0 2,0 2,0 | 0,15 0,30 0,35 | 0,03 0,03 0,03 | 1,5 – 2,5 4,0 – 8,0 4,0 – 8,0 |
Note: Letters in the alloy base grade mean: FeMn – ferromanganese, N – Nitrogen, SmL – smelted, ST – sintered. |