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Physical Properties of Cobalt and Iron

Cobalt
Iron
Physical Properties of Iron and Cobalt


Physical Properties
Melting Point
1,495.00 °C   
29
1,535.00 °C   
25
Boiling Point
2,870.00 °C   
34
2,750.00 °C   
37
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
5.00   
8
4.00   
10
Brinell Hardness
470.00 MPa   
26
200.00 MPa   
40
Vickers Hardness
1,043.00 MPa   
11
608.00 MPa   
18
Speed of Sound
4,720.00 m/s   
14
5,120.00 m/s   
8
Optical Properties
  
  
Reflectivity
67.00 %   
11
65.00 %   
12
Allotropes
Yes   
Yes   
α Allotropes
α-Cobalt   
Ferrite (alpha Iron)   
β Allotropes
β-Cobalt   
beta Iron   
γ Allotropes
Not Available   
gamma Iron   
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