Fine-grade microalloyed steels with a low carbon content with the addition of niobium, titanium, and/or vanadium as microalloying elements to achieve structural hardening and grain refining. These steels show improved weldability as a result of carbon equivalent.

The low sulfur content, high internal purity, and fine-grade structure ensure better ductility, higher toughness, and higher fatigue resistance.

The demand for this type of steel is growing day by day, often as a replacement for structural steels, since due to their high elastic strength they represent a great weight saving compared to these. They are also in great demand in the automotive sector, where they contribute, to a large extent, to weight savings in body bodies.