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Physical Properties of Copper and Niobium

Copper
Niobium
Physical Properties of Niobium and Copper


Physical Properties
Melting Point
1,084.62 °C   
40
2,468.00 °C   
6
Boiling Point
2,562.00 °C   
99+
2,468.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Copper   
Gray   
Luster
NA   
Metallic   
Hardness
  
  
Mohs Hardness
3.00   
12
6.00   
6
Brinell Hardness
235.00 MPa   
38
735.00 MPa   
14
Vickers Hardness
343.00 MPa   
28
870.00 MPa   
12
Speed of Sound
3,810.00 m/s   
19
3,480.00 m/s   
21
Optical Properties
  
  
Reflectivity
90.00 %   
3
Not Available   
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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