FeSiMn
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Manganese is an alloy of the elements manganese, silicon and iron. Which is used as an alloying agent in steel production. This alloy is one of the most widely used ferroalloys in the world and plays an essential role in the strength, hardness and flexibility of steel
Manganese is a major component in steelmaking that increases the tensile strength of steel, and silica is used as a oxidizer in the release of undesirable melting gases. Manganese also improves the impact resistance of steel
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Ferro  Silico Manganese