GOST 4755-91
| Types (GOST) | Mass content, % | ||||
| Mn | C | Si | P | S | |
| Up to | |||||
| Low Carbon Ferromanganese | |||||
| ФМн90(PА) | 85,0-95,0 | 0,5 | 1,8 | 0,05 | 0,02 |
| ФМн90(PБ) | 85,0-95,0 | 0,5 | 1,8 | 0,3 | 0,02 |
| Medium Carbon Ferromanganese | |||||
| ФМн88(PА) | 85,0-95,0 | 2 | 3 | 0,1 | 0,02 |
| ФМн88(PБ) | 85,0-95,0 | 2 | 3 | 0,4 | 0,02 |
| High Carbon Ferromanganese | |||||
| ФМн78(PА) | 75,0-82,0 | 7 | 6 | 0,05 | 0,02 |
| ФМн78(PБ) | 75,0-82,0 | 7 | 6 | 0,7 | 0,02 |
| ФМн70(PА) | 65,0-75,0 | 7 | 6 | 0,3 | 0,02 |
| ФМн70(PБ) | 65,0-75,0 | 7 | 6 | 0,7 | 0,02 |
| High Carbon Ferromanganese | |||||
| Types (ISO) | Mass content, % | ||||
| Mn | C | Si | P | S | |
| Up to | |||||
| FeMn75C80VHP | 70,0-82,0 | 8 | 2 | 0,5 | 0,03 |
| FeMn75C80HP | 70,0-82,0 | 8 | 2 | 0,35 | 0,03 |
| FeMn75C80MP | 70,0-82,0 | 8 | 2 | 0,25 | 0,03 |
| FeMn75C80LP | 70,0-82,0 | 8 | 2 | 0,15 | 0,03 |
| FeMn75C80VLP | 70,0-82,0 | 8 | 2 | 0,1 | 0,03 |
| Medium Carbon Ferromanganese | |||||
| Types (ISO) | Mass content, % | ||||
| Mn | C | Si | P | S | |
| Up to | |||||
| FeMn80C20 | 75,0-85,0 | 1,5-2,0 | 2 | 0,35 | 0,03 |
| FeMn80C20LP | 75,0-85,0 | 1,5-2,0 | 2 | 0,2 | 0,03 |
| FeMn80C15 | 75,0 - 85,0 | 1,0-1,5 | 2 | 0,35 | 0,03 |
| FeMn80C15LP | 75,0-85,0 | 1,0-1,5 | 2 | 0,2 | 0,03 |
| FeMn80C10 | 75,0-85,0 | 0,5-1,0 | 2 | 0,35 | 0,03 |
| FeMn80C10LP | 75,0-85,0 | 0,5-1,0 | 2 | 0,2 | 0,03 |
| FeMn90C20 | 85,0-95,0 | 1,5-2,0 | 2 | 0,35 | 0,03 |
| FeMn90C20LP | 85,0-95,0 | 1,5-2,0 | 2 | 0,2 | 0,03 |
| FeMn90C15 | 85,0-95,0 | 1,0-2,0 | 2 | 0,35 | 0,03 |
| FeMn90C15LP | 85,0-95,0 | 1,0-1,5 | 2 | 0,2 | 0,03 |
| FeMn90C10 | 85,0-95,0 | 0,5-1,0 | 2 | 0,35 | 0,03 |
| FeMn90C10LP | 85,0-95,0 | 0,5-1,0 | 2 | 0,2 | 0,03 |
| Low Carbon Ferromanganese | |||||
| Types (ISO) | Mass content, % | ||||
| Mn | C | Si | P | S | |
| Up to | |||||
| FeMn80C05 | 75,0-85,0 | 0,1-0,5 | 2 | 0,3 | 0,03 |
| FeMn80C05LP | 75,0-85,0 | 0,1-0,5 | 2 | 0,15 | 0,03 |
| FeMn80C01 | 75,0-85,0 | до 0,1 | 2 | 0,3 | 0,03 |
| FeMn80C01LP | 75,0-85,0 | до 0,1 | 2 | 0,15 | 0,03 |
| FeMn90C05 | 85,0-95,0 | 0,1-0,5 | 2 | 0,3 | 0,03 |
| FeMn90C05LP | 85,0-95,0 | 0,1-0,5 | 2 | 0,15 | 0,03 |
| FeMn90C01 | 85,0-95,0 | до 0,1 | 2 | 0,3 | 0,03 |
| FeMn90C01LP | 85,0-95,0 | до 0,1 | 2 | 0,15 | 0,03 |
| Nitrided Ferromanganese | ||||||
| Types (ISO) | Mass content, % | |||||
| Mn | C | Si | P | S | N | |
| At least | Up to | |||||
| Molten | ||||||
| FeMn80C05N2 | 80 | 0,1-0,5 | 2 | 0,15 | 0,03 | 1,5-2,5 |
| Sintered | ||||||
| FeMn70C05N5 | 69 | 0,1-0,5 | 2 | 0,3 | 0,03 | 4,0-8,0 |
| FeMn70C05N5LP | 69 | 0,1-0,5 | 2 | 0,15 | 0,03 | 4,0-8,0 |
| FeMn70C10N5 | 69 | 0,5-2,0 | 2 | 0,35 | 0,03 | 4,0-8,0 |
| FeMn70C10N5LP | 69 | 0,5-2,0 | 2 | 0,2 | 0,03 | 4,0-8,0 |