ferromanganese 1.Made by manganese,iron, small amout of C,Si,S,P. 2.Used ... manganese,silicon,iron and a small amount of carbon and other element of the alloy,it used as deoxidizer,desulferizer and additive ... ,FeMn84C0.7,FeMn88C0.2 80-921-20.70.020.4 manganese lump