Physical Properties of Niobium and Manganese
Melting Point
1,245.00 °C
  
37
Boiling Point
2,468.00 °C
  
99+
1,962.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Gray
  
Silver
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Brinell Hardness
196.00 MPa
  
99+
Vickers Hardness
Not Available
  
Speed of Sound
3,480.00 m/s
  
21
5,150.00 m/s
  
7
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available