Manganese metal is used as a deoxidant and alloy additive for special steel sorts, as well as in chemical industry.
Grade and chemical composition of metal and nitrogenized manganese should correspond to the requirements of the table below.
| Grade | Processing | Mass weight percentage, % | |||||
| Manganese no less than | Carbon | Silicon | Phosphor | Sulphur | Nitrogen No less than | ||
| No more than | |||||||
|
Mn965 Mn95
|
Electrothermic |
96,5 95,0 |
0,10 0,20 |
0,8 1,8 |
0,05 0,07 |
0,05 0,05 |
-- -- |
|
Mn87Н6 Mn89Н4 Mn91Н2 |
Electrothermic nitriding |
87,0 89,0 91,0 |
0,20 0,20 0,20 |
1,8 1,8 1,8 |
0,07 0,07 0,07 |
0,05 0,05 0,05
|
6,0 4,0 2,0 |
There are the following grades of metal and nitrided manganese: Mn965, Mn95 – in lumps not bigger than 15 kg. Lumps heavier than 15 kg should not exceed 3% of the batch weight. Small fractions going through a sieve 10х10 mm should not exceed 10% of the batch mass.Mn87Н6, Mn89Н4, Mn91Н2 – in lumps not bigger than 15 kg. Small fractions going through a sieve 10х10 mm should not exceed 20% of the batch mass.