Steels with Carbon (C), Silicon (Si), Manganese (Mn), Phosphorus (P), Sulphur (S), which combined with other alloy elements like Chromium (Cr), Nickel (Ni), Molybdenum (Mo) or Vanadium (V), create low alloy steels with increased mechanical properties of elasticity and hardness.

-Carbon steels: Metallographic structure made up mainly of ferrite.

-Low-alloyed steels: Metallographic structure made up mainly of martensite.

They can undergo heat treatments: of annealing, quenching and tempering.

Industrial applications: Railway, automotive, mechanical construction, cement, mining...