Physical Properties of Gold and Iron
Melting Point
1,064.43 °C
  
99+
1,535.00 °C
  
25
Boiling Point
2,807.00 °C
  
36
2,750.00 °C
  
37
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Gold
  
Gray
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Brinell Hardness
194.00 MPa
  
99+
Speed of Sound
2,030.00 m/s
  
99+
5,120.00 m/s
  
8
Optical Properties
  
  
Allotropes
No
  
Yes
  
α Allotropes
Not Available
  
Ferrite (alpha Iron)
  
β Allotropes
Not Available
  
beta Iron
  
γ Allotropes
Not Available
  
gamma Iron