Low chrome steel ball is an important grinding body in ball mill, which is widely used in many industries such as , cement and building materials, thermal power generation, flue gas desulfurization and so on. Its preparation methods include medium frequency electric furnace melting, metal mold or sand casting. The chemical composition of low-chromium steel ball includes carbon, silicon, manganese, chromium and other elements, among which the content of chromium is low, which makes its cost relatively low. It is suitable for occasions that do not require high wear resistance.