Hafnium is a silver-grey shining and corrosion-resistant metal. It has similar characteristics to those of zirconium and only appears as its by-element in nature.
Hafnium is historically used in nuclear power plants (control rod). The dominant application of this metal are the so-called superalloys. These extremely stable, refractory and heat-resistant materials are used in the aerospace industry as well as in the manufacture of gas turbines.