1. Ferro Manganese is an alloy of Iron and manganese, with manganese between 65.0%~90.0%, as deoxidizer and alloying element additive. Divided into furnace ferromanganese and blast furnace ferromanganese.

2. Main categories: high carbon ferromanganese (carbon 7%), medium carbon ferromanganese
(carbon 1.0~1.5%), low carbon ferromanganese (0.5% carbon), metal manganese, Spiegel, Silicon-manganese alloy.

3. International general standard for carbon ferromanganese containing mananese with 75 ~ 80%. To adapt to the conditions of low grade raw ore, China provides manganese lower grades (furnace ferromanganese manganese containing more than 65%, blast furnace ferromanganese manganese containing more than 50%).