Ferro Silicon Manganese (FeSiMn) is an alloy of manganese, silicon, and iron, widely used in steelmaking as a deoxidizer, desulphurizer, and alloying agent to enhance steel strength, hardness, and toughness. It reduces impurities, prevents surface cracking during rolling, and acts as a key component in producing carbon, stainless, and silicon steels. Contains a high percentage of manganese and silicon, generally with around 17-20% silicon.