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Physical Properties of Cobalt and Chromium


Physical Properties of Chromium and Cobalt


Physical Properties

Melting Point
1,495.00 °C   
29
1,857.00 °C   
14

Boiling Point
2,870.00 °C   
34
2,672.00 °C   
39

Appearance
  
  

Physical State
Solid   
Solid   

Color
Gray   
Silver   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
5.00   
8
8.50   
1

Brinell Hardness
470.00 MPa   
26
687.00 MPa   
16

Vickers Hardness
1,043.00 MPa   
11
1,060.00 MPa   
10

Speed of Sound
4,720.00 m/s   
14
5,940.00 m/s   
5

Optical Properties
  
  

Reflectivity
67.00 %   
11
Not Available   

Allotropes
Yes   
No   

α Allotropes
α-Cobalt   
Not Available   

β Allotropes
β-Cobalt   
Not Available   

γ Allotropes
Not Available   
Not Available   

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