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Physical Properties of Iridium and Cobalt


Physical Properties of Cobalt and Iridium


Physical Properties

Melting Point
2,410.00 °C   
7
1,495.00 °C   
29

Boiling Point
4,527.00 °C   
10
2,870.00 °C   
34

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Gray   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
6.50   
5
5.00   
8

Brinell Hardness
1,670.00 MPa   
5
470.00 MPa   
26

Vickers Hardness
1,760.00 MPa   
3
1,043.00 MPa   
11

Speed of Sound
4,825.00 m/s   
13
4,720.00 m/s   
14

Optical Properties
  
  

Reflectivity
78.00 %   
6
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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