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Physical Properties of Platinum and Tantalum

Platinum
Tantalum
Physical Properties of Tantalum and Platinum


Physical Properties
Melting Point
1,772.00 °C   
16
2,996.00 °C   
4
Boiling Point
3,827.00 °C   
15
5,425.00 °C   
4
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Gray Blue   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
3.50   
11
6.50   
5
Brinell Hardness
300.00 MPa   
34
440.00 MPa   
28
Vickers Hardness
400.00 MPa   
25
870.00 MPa   
12
Speed of Sound
2,800.00 m/s   
29
3,400.00 m/s   
22
Optical Properties
  
  
Reflectivity
73.00 %   
8
78.00 %   
6
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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