Color: gray
State at 25°C: solid
Density (g/cm3): 16.65
Hardness (Mohs): No data
Melting Point (K): 3269.2
Boiling Point (K): 5807
Heat of Fusion (kJ/mol): 31.38
Heat of Vaporization (kJ/mol): 753
Heat of Atomization (kJ/mol): 782
Therm. Conductivity (J/m sec K): 57.5
Elec. Conductivity (1/mohm cm): 80.321
Abundance, Solar System: -1.684
Abundance, Earth's Crust: 0.3
Pure Cost ($/100g): $ 120.00
Bulk Cost ($/100g):  
Source: Tantalite (oxide)