Mechanical Properties of Neptunium and Hafnium
Density
  
  
Density At Room Temperature
19.38 g/cm3
  
14
13.31 g/cm3
  
26
Density When Liquid (at m.p.)
Not Available
  
12.00 g/cm3
  
12
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Ductile
  
Ductile, Malleable