Ferro Silicon Manganese is a ferroalloy composed of manganese, silicon, iron and a small amount of carbon and other elements. It is a ferro alloy with a wide applications and a large outputs. Silicon and manganese have a strong affinity with oxygen in silicon manganese alloy. In the steel making, using silicon manganese alloy, produced deoxidized products MnSiO3 and MnSiO4, which have low melting point, large particles and easy to float as well as good deoxidation effect, are melted at 1270 ℃ and 1327℃.
| Model | Si | Mn | C | P | S |
| FeMn65Si17 | 17-19% | 65-68% | 2.0%max | 0.25%max | 0.04%max |
| FeMn60Si14 | 14-16% | 60-63% | 2.5%max | 0.3%max | 0.05%max |