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Holmium, Ho
Categories: Metal; Nonferrous Metal; Pure Element

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Physical PropertiesMetricEnglishComments
Density 8.80 g/cc0.318 lb/in³
 
Chemical PropertiesMetricEnglishComments
Atomic Mass 164.9303164.9303164.93032 - 1995
Atomic Number 6767
X-ray Absorption Edge 0.2229 Å0.2229 ÅK
 1.31942 Å1.31942 ÅLI
 1.38999 Å1.38999 ÅLII
 1.53529 Å1.53529 ÅLIII
Electronegativity 1.231.23Pauling
Ionic Radius 0.894 Å0.894 ÅCrystal Ionic Radius for Valence +3
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 4646
Tensile Strength, Ultimate 259 MPa37600 psi
Tensile Strength, Yield 221 MPa32100 psi
Tensile Modulus 64.8 GPa9400 ksi
Bulk Modulus 40.2 GPa5830 ksi
Poissons Ratio 0.2310.231
Shear Modulus 26.3 GPa3810 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000814 ohm-cm0.0000814 ohm-cm
Magnetic Susceptibility 0.0004260.000426cgs/g
Curie Temperature -253 °C-423 °F
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 104 J/g44.7 BTU/lb
CTE, linear 11.2 µm/m-°C
@Temperature 20.0 °C
6.22 µin/in-°F
@Temperature 68.0 °F
Specific Heat Capacity 0.163 J/g-°C0.0390 BTU/lb-°F
Thermal Conductivity 16.2 W/m-K112 BTU-in/hr-ft²-°FPolycrystalline Sample
Melting Point 1470 °C2680 °F
Boiling Point 2700 °C4890 °F
 
Component Elements PropertiesMetricEnglishComments
Holmium, Ho 100 %100 %
 
Descriptive Properties
CAS Number7440-60-0

References for this datasheet.

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AMEHo00 / 47

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