Manganese (Mn) has three key benefits. It combines with sulphur in the melt to improve the hot working properties of the resulting steel, it acts as a deoxidant, and it makes an important contribution to the final toughness and hardness of the steel.
FeMn is produced from manganese ore or concentrate mostly in electric arc furnaces, and is generally categorised as high, medium or low carbon material. In commercially traded grades the Mn content is often in the range 75-80%, though it can be 65-82%. Carbon content is usually in the range 1.5-7.5%.