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Physical Properties of Thorium and Cobalt

Thorium
Cobalt
Physical Properties of Cobalt and Thorium


Physical Properties
Melting Point
1,750.00 °C   
17
1,495.00 °C   
29
Boiling Point
4,790.00 °C   
8
2,870.00 °C   
34
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Gray   
Luster
NA   
Metallic   
Hardness
  
  
Mohs Hardness
3.00   
12
5.00   
8
Brinell Hardness
390.00 MPa   
29
470.00 MPa   
26
Vickers Hardness
295.00 MPa   
29
1,043.00 MPa   
11
Speed of Sound
2,490.00 m/s   
36
4,720.00 m/s   
14
Optical Properties
  
  
Reflectivity
Not Available   
67.00 %   
11
Allotropes
No   
Yes   
α Allotropes
Not Available   
α-Cobalt   
β Allotropes
Not Available   
β-Cobalt   
γ Allotropes
Not Available   
Not Available   
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