Ferro Silicon Manganese

Silico Manganese is an alloy with 60 to 68% manganese, 14% to 21% silicon, and 1.5 to 2% carbon. It is produced by smelting of slag from high-carbon Ferro Manganese or of Manganese ore with coke and a quartz flux. Smelting temperatures are high and greater energy is needed to reduce the quartz to silicon.
Both silicon and manganese have an important influence on the properties of steel, depending on the amount added and the combined effect with other alloying elements. Silicon and manganese have a strong affinity for oxygen, and will act as deoxidizers. Deoxidation with SiMn results in cleaner steel, as the liquid manganese silicate formed coagulates and separates easier from the melt, compared to solid SiO2 formed during FeSi deoxidation. Use of Ferro Silico Manganese adds less phosphorus, carbon, and nitrogen to steel compared to standard FeSi 75 plus HC FeMn.

There are three variants of Silico Manganese:

• High Carbon Silico Manganese
• Medium Carbon Silico Manganese
• Low Carbon Silico Manganese