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Physical Properties of Niobium and Gold

Niobium
Gold
Physical Properties of Gold and Niobium


Physical Properties
Melting Point
2,468.00 °C   
6
1,064.43 °C   
99+
Boiling Point
2,468.00 °C   
99+
2,807.00 °C   
36
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Gold   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
6.00   
6
2.50   
14
Brinell Hardness
735.00 MPa   
14
194.00 MPa   
99+
Vickers Hardness
870.00 MPa   
12
216.00 MPa   
31
Speed of Sound
3,480.00 m/s   
21
2,030.00 m/s   
99+
Optical Properties
  
  
Reflectivity
Not Available   
95.00 %   
2
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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