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Product/ Grade	Size	%C	%Mn	%P	%S	%Si
Ferro Manganese

Normal Quality	10 - 150 mm	6.0 - 8.0	70.0 Min	0.350 Max	0.050 Max	1.50 Max

Export Quality	10 - 50 mm	6.0 - 8.0	75.0 Min	0.300 Max	0.050 Max	1.50 Max

Ferro Manganese

Ferro-Manganese (Fe-Mn) is a metallic ferro alloy which is added normally along with ferro-silicon as ladle addition during steelmaking. It is a ferroalloy composed principally of manganese and iron, and normally contains much smaller proportions of minor elements, such as carbon, phosphorus, and sulphur. Fe-Mn is an important additive used as a deoxidizer in the production of steel. It is a master alloy of iron and manganese with a minimum manganese content of 65 % and maximum content of 95 %.

Fe- Mn is a ferroalloy with high content of manganese. It is produced by heating a mixture of the oxides of manganese (MnO2) and iron (Fe2O3) with carbon normally as coal and coke, in either a blast furnace or a SAF. The oxides undergo carbo thermal reduction to produce Fe- Mn. It is produced as three types of products namely (i) standard high carbon Fe-Mn, (ii) medium carbon Fe-Mn and (iii) low carbon Fe- Mn. High carbon Fe-Mn has manganese in the range of 72 % to 82 %, carbon in the range of 6 % to 8 %, and silicon in the range of around 1.5 %. Medium carbon Fe-Mn has manganese in the range of 74 % to 82 %, carbon in the range of 1 % to 3 % and silicon in the range of around 1.5 %. Low carbon Fe-Mn has manganese in the range of 80 % to 85 %, carbon in the range of 0.1 % to 0.7 % and silicon in the range of 1 % to 2 %.

Manganese plays an important role in the manufacturing of steel as deoxidizing, desulphurizing, and alloying agent. It is a mild deoxidizer than silicon but enhances the effectiveness of the latter due to the formation of stable manganese silicates and aluminates. It is used as an alloying element in almost all types of steel. Of particular interest is its modifying effect on the iron-carbon system by increasing the hardenability of the steel. By adding the manganese as medium carbon Fe-Mn or low carbon Fe-Mn instead of high carbon Fe-Mn, around 80 % to 93 % less carbon is added to the steel. Nitride medium carbon Fe-Mn contains a minimum of 4 % of nitrogen.