It is the principle strengthening element in carbon steels and low-alloy steels. Atomic number 6, atomic weight 12.01115. Manganese (Mn): Manganese is a brittle, metallic element that exists in ...

Carbon steels are steels in which the main alloying additive is carbon. Alloy steels are alloyed with other metals or materials, in addition to carbon, to improve properties. Carbon steels are ...