Also called low-carbon silicon-manganese, is a high-purity alloy with very low levels of harmful and impurity elements (C, S, P, Fe), and is a good deoxidizer in the steelmaking process. The high silicon manganese alloy is an intermediate product of smelting metal manganese. Compared with ordinary silicon-manganese, the deoxidation and reduction effects in the steel-making process are increased by 2-3 times.