高碳锰铁是由锰、铁组成的合金。由高炉法和电炉进行生产。电炉高碳锰铁主要用于炼钢作脱氧剂、脱硫剂及合金添加剂，另外随着中低碳锰铁生产工艺的进步，高碳锰铁还可应用于生产中低碳锰铁。锰铁根据其含碳量不同分为三类：低碳类：碳不大于0.7%；中碳类：碳不大于0.7%至2.0%；高碳类：碳不大于2.0%至8.0%。
High-carbon ferromanganese is an alloy composed of manganese and iron. It is produced by blast furnace method and electric furnace. Electric furnace high-carbon ferromanganese is mainly used as deoxidizer, desulfurizer and alloy additives in steelmaking, and with the progress of medium and low carbon ferromanganese production technology, high carbon ferromanganese can also be used in the production of medium and low carbon ferromanganese. Ferromanganese is divided into three categories according to its different carbon content: low-carbon category: carbon is not more than 0.7%; Medium carbon: carbon not more than 0.7% to 2.0%; High carbon: carbon not more than 2.0% to 8.0%.