Hafnium
| Symbol: | Hf |
| Number: | 72 |
| Melting point: | 2.233°C |
| Density: | 13,31 g/cm³ |
| Appearance: | steel gray |
| Characteristics: | shiny, silvery, ductile metal |
| Occurrence: | South Africa, Australia |
| Applications: | As alloying addition for corrosion resistance and temperature-resistant steels and stainless steels control rod for nuclear reactors |
| Size: | pieces, min. 97 % Hf |