Mechanical Properties of Neptunium and Thallium
Density
  
  
Density At Room Temperature
19.38 g/cm3
  
14
11.85 g/cm3
  
31
Density When Liquid (at m.p.)
Not Available
  
11.22 g/cm3
  
13
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Ductile
  
Ductile, Sectile