Physical Properties of Chromium and Niobium
Melting Point
1,857.00 °C
  
14
Boiling Point
2,672.00 °C
  
39
2,468.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silver
  
Gray
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Vickers Hardness
1,060.00 MPa
  
10
Speed of Sound
5,940.00 m/s
  
5
3,480.00 m/s
  
21
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available