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Physical Properties of Niobium and Iron

Niobium
Iron
Physical Properties of Iron and Niobium


Physical Properties
Melting Point
2,468.00 °C   
6
1,535.00 °C   
25
Boiling Point
2,468.00 °C   
99+
2,750.00 °C   
37
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
6.00   
6
4.00   
10
Brinell Hardness
735.00 MPa   
14
200.00 MPa   
40
Vickers Hardness
870.00 MPa   
12
608.00 MPa   
18
Speed of Sound
3,480.00 m/s   
21
5,120.00 m/s   
8
Optical Properties
  
  
Reflectivity
Not Available   
65.00 %   
12
Allotropes
No   
Yes   
α Allotropes
Not Available   
Ferrite (alpha Iron)   
β Allotropes
Not Available   
beta Iron   
γ Allotropes
Not Available   
gamma Iron   
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