Mechanical Properties of Promethium and Thorium
Density
  
  
Density At Room Temperature
7.26 g/cm
3
  
99+
11.72 g/cm
3
  
32
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Other Mechanical Properties
NA
  
Ductile