The chemical composition of metallic silicon is generally silicon, ferro, aluminum, and calcium. Therefore, the grade of metal silicon is divided according to the three main impurity contents of iron, aluminum and calcium.

Silicon metal 441 generally the diameter is 10-50mm,50-100mm,10-100mm or other sizes as customer’s request.
Silicon metal is a gray and shiny semiconductor metal,also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-ferrous alloys which smelted from quartz and coke in an electric furnace.
The classification of metallic silicon is usually classified according to the content of iron, aluminum and calcium, silicon metal can be divided into different grades such as 553, 441, 411, 3303, 2202, and 1101.

Silicon metal is a gray and shiny semiconductor metal,also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-ferrous alloys which smelted from quartz and coke in an electric furnace. The classification of metallic silicon is usually classified according to the content of iron, aluminum and calcium, silicon metal can be divided into different grades such as 553, 441, 411, 421, 3303, 3305, 2202, 2502, 1501, and 1101.Generally the diameter is 10-50mm,50-100mm,10-100mm or other sizes as customer’s request.

Silicon metal 2202 is high grade silicon metal.It's silicon content is above 99.5%. The ferro content is 0.2%, the aluminum content is 0.2%, and the calcium content is 0.02%.