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Physical Properties of Cobalt and Rhenium

Cobalt
Rhenium
Physical Properties of Rhenium and Cobalt


Physical Properties
Melting Point
1,495.00 °C   
29
3,180.00 °C   
2
Boiling Point
2,870.00 °C   
34
5,627.00 °C   
2
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Silvery Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
5.00   
8
7.00   
3
Brinell Hardness
470.00 MPa   
26
1,320.00 MPa   
8
Vickers Hardness
1,043.00 MPa   
11
1,350.00 MPa   
7
Speed of Sound
4,720.00 m/s   
14
4,700.00 m/s   
15
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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