Cor-ten steel is a material paradox, but this is what makes it particularly interesting. its main characteristic is the excellent resistance to corrosion from atmospheric agents since the natural oxidation stops with time, forming a protective patina that does not change over time. the oxidized color tone that originates on the surface appears warm and intense and offers many aesthetic solutions in relation to the unusual "elegance of rust" which underlines the feeling of experience given by the signs of time, as evidenced by the wide use for monumental buildings and sculptures outdoors.