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Physical Properties of Hafnium and Platinum

Hafnium
Platinum
Physical Properties of Platinum and Hafnium


Physical Properties
Melting Point
2,150.00 °C   
10
1,772.00 °C   
16
Boiling Point
5,400.00 °C   
5
3,827.00 °C   
15
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
5.50   
7
3.50   
11
Brinell Hardness
1,450.00 MPa   
6
300.00 MPa   
34
Vickers Hardness
1,520.00 MPa   
5
400.00 MPa   
25
Speed of Sound
3,010.00 m/s   
27
2,800.00 m/s   
29
Optical Properties
  
  
Reflectivity
Not Available   
73.00 %   
8
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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