Silicon Manganese 

Manganese-silicon alloy is a kind of alloy composed of manganese, silicon, iron and small amount of carbon and other elements. 

 it is widely-used and productive ferroalloy. It’s consumption is ranked the second in electric furnace ferroalloy products. 

The manganese and silicon in it has strong affinity for oxygen, using manganese-silicon alloy in steelmaking would produce the deoxy products MnSiO3 and Mn2SiO4 (the melting point are 1270℃ and 1327℃ respectively)which have the advantages of low melting point, large particle , easy to float and good deoxidation effect, etc. 

SiMn alloy detail Spec