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Physical Properties of Cobalt and Nickel

Cobalt
Nickel
Physical Properties of Nickel and Cobalt


Physical Properties
Melting Point
1,495.00 °C   
29
1,453.00 °C   
31
Boiling Point
2,870.00 °C   
34
2,732.00 °C   
38
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Silver   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
5.00   
8
4.00   
10
Brinell Hardness
470.00 MPa   
26
667.00 MPa   
18
Vickers Hardness
1,043.00 MPa   
11
638.00 MPa   
16
Speed of Sound
4,720.00 m/s   
14
4,900.00 m/s   
12
Optical Properties
  
  
Reflectivity
67.00 %   
11
72.00 %   
9
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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