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Physical Properties of Iron and Potassium

Iron
Potassium
Physical Properties of Potassium and Iron


Physical Properties
Melting Point
1,535.00 °C   
25
63.65 °C   
99+
Boiling Point
2,750.00 °C   
37
774.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Silvery Gray   
Luster
Metallic   
NA   
Hardness
  
  
Mohs Hardness
4.00   
10
0.40   
23
Brinell Hardness
200.00 MPa   
40
0.36 MPa   
99+
Vickers Hardness
608.00 MPa   
18
Not Available   
Speed of Sound
5,120.00 m/s   
8
2,000.00 m/s   
99+
Optical Properties
  
  
Reflectivity
65.00 %   
12
Not Available   
Allotropes
Yes   
No   
α Allotropes
Ferrite (alpha Iron)   
Not Available   
β Allotropes
beta Iron   
Not Available   
γ Allotropes
gamma Iron   
Not Available   
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