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Physical Properties of Niobium and Iridium

Niobium
Iridium
Physical Properties of Iridium and Niobium


Physical Properties
Melting Point
2,468.00 °C   
6
2,410.00 °C   
7
Boiling Point
2,468.00 °C   
99+
4,527.00 °C   
10
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
6.00   
6
6.50   
5
Brinell Hardness
735.00 MPa   
14
1,670.00 MPa   
5
Vickers Hardness
870.00 MPa   
12
1,760.00 MPa   
3
Speed of Sound
3,480.00 m/s   
21
4,825.00 m/s   
13
Optical Properties
  
  
Reflectivity
Not Available   
78.00 %   
6
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
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