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Physical Properties of Tungsten and Hafnium

Tungsten
Hafnium
Physical Properties of Hafnium and Tungsten


Physical Properties
Melting Point
3,410.00 °C   
1
2,150.00 °C   
10
Boiling Point
5,660.00 °C   
1
5,400.00 °C   
5
Appearance
  
  
Physical State
Solid   
Solid   
Color
Grayish White   
Gray   
Luster
Lustrous   
Metallic   
Hardness
  
  
Mohs Hardness
7.50   
2
5.50   
7
Brinell Hardness
2,000.00 MPa   
4
1,450.00 MPa   
6
Vickers Hardness
3,430.00 MPa   
1
1,520.00 MPa   
5
Speed of Sound
4,620.00 m/s   
16
3,010.00 m/s   
27
Optical Properties
  
  
Reflectivity
62.00 %   
13
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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