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Elmet Technologies

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Praseodymium, Pr
Categories: Metal; Nonferrous Metal; Pure Element

Material Notes: Physical Form: Silver-Metal; Hexagonal

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Physical PropertiesOriginal ValueComments
Density 6.77 g/cc
 
Chemical PropertiesOriginal ValueComments
Atomic Mass 140.9077140.90765 - 1995
Atomic Number 59
X-ray Absorption Edge 0.29517 ÅK
 1.81307 ÅLI
 1.92305 ÅLII
 2.07707 ÅLIII
Electronegativity 1.13Pauling
Ionic Radius 0.900 ÅCrystal Ionic Radius for Valence +4
 1.013 ÅCrystal Ionic Radius for Valence +3
 
Mechanical PropertiesOriginal ValueComments
Hardness, Vickers 20
Tensile Strength, Ultimate 110 MPa
Tensile Strength, Yield 100 MPa
Elongation at Break 15 %
Tensile Modulus 37.3 GPa
Bulk Modulus 28.8 GPa
Poissons Ratio 0.281
Shear Modulus 14.8 GPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000680 ohm-cm
Magnetic Susceptibility 0.0000378cgs/g
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 48.0 J/g
CTE, linear 4.50 µm/m-°C
@Temperature 20.0 °C
alpha phase along a-axis
 11.2 µm/m-°C
@Temperature 20.0 °C
alpha phase along c-axis
Specific Heat Capacity 0.1519 J/g-°CGas
 0.200 J/g-°C
Thermal Conductivity 11.7 W/m-K
Melting Point 927 - 935 °C
Boiling Point 3520 °C
Heat of Formation 0.000 kJ/molCrystal
 355.6 kJ/molGas
 
Optical PropertiesOriginal ValueComments
Emissivity (0-1) 0.284
@Wavelength >=645 nm,
Temperature 931 - 1537 °C
Liquid
 
Component Elements PropertiesOriginal ValueComments
Praseodymium, Pr 100 %
 
Descriptive Properties
CAS Number7440-10-0

References for this datasheet.

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