Silicon manganese (SiMn) also known as silicomanganese, a ferroalloy with high contents of manganese and silicon, is made by heating a mixture of the oxides manganese oxide (MnO2), silicon dioxide (SiO2), and iron oxide (Fe2O3), with carbon in a furnace. They undergo a thermal decomposition reaction. It is used as a deoxidizer and an alloying element in steel.
Silicon increases the strength without a serious loss of ductility. It also adds scale resistance. These steels are generally heat treated to specific properties.
The standard grade silicon manganese contains 14.0% to 16.0% of silicon, 60% to 65% of manganese and 2% of carbon.
Vulcan Alloys currently trades in multiple grades of SiMn
|Chemical Specification||SiMn Grade 1||SiMn Grade 2|
|Manganese (Mn)||60.0% min||65.0% min|
|Silicon (Si)||14.0% max||16.0% min|
|Carbon (C)||2.50% max||2.50% max|
|Phosphorus (P)||0.35% max||0.30% max|
|Sulphur (S)||0.05% max||0.05% max|
|Size||Lumps / Powder||Lumps / Powder|
|Packaging||50 Kg HDPE bags / Jumbo bags||50 Kg HDPE bags / Jumbo bags|