Physical Properties of Rhenium and Promethium
Physical Properties
Melting Point
3,180.00 °C
2
1,042.00 °C
99+
Boiling Point
5,627.00 °C
2
3,000.00 °C
31
Appearance
Physical State
Solid
Solid
Color
Silvery Gray
Unknown
Luster
Metallic
Metallic
Hardness
Mohs Hardness
7.00
3
Not Available
Brinell Hardness
1,320.00 MPa
8
Not Available
Vickers Hardness
1,350.00 MPa
7
Not Available
Speed of Sound
4,700.00 m/s
15
Not Available
Optical Properties
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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