Hafnium

Properties

Atomic Number

72

Atomic Symbol

Hf

Atomic Mass

178.49

CAS No.

7440-58-6

Density

13.31 g/cm³

Series

transition metal

Melting Point

2,233°C

Boiling Point

4,603°C

Thermal Conductivity

0.23 W/cm °C

Heat of Fusion

25.5 kJ/mol

Heat of Vaporization

630 kJ/mol

Electronegativity

1.3 pauling

Crystal Structure

Hexagonal

Electrical Conductivity

3.3×10⁶ S/m