eFunda: General Information on Element Hafnium
engineering fundamentals Element Information: Hafnium
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Hafnium
72
Hf
178.49
Atomic Number 72
Atomic Weight 178.49
Electron Config. 2-2-6-2-6-10-2-6-10-14-2-6-2-0-2
Electron configuration order: 1s-2s-2p-3s-3p-3d-4s-4p-4d-4f-5s-5p-5d-5f-6s-6p-6d-7s

Mechanical Properties Conditions
Phase Temp. (K) Pressure (Pa)
Density 13300 kg/m3 Solid  298.15 
Poisson Ratio 0.37 Solid     
Thermal Expansion Coefficient 5.900 /K Solid  298.15  

Electrical Properties Conditions
Temp. (K) Note
Electrical Resistivity 3.510 W-m 298.15  

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 2506.15 K   101325 
Boiling Temperature 4876.15 K   101325 
Critical Temperature 10400 K    
Fusion Enthalpy 152.4 J/g 101325 
Heat Capacity 144 J/kg-K 298.149993896 100000 
Thermal Conductivity 23 W/m-K 300 101325 

 
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