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Industrial alloys
Precious metals
Ruthenium Other metals

Physical Properties
Density at 20° C     12.200g / cm³
Boiling point     4900° C
Melting point     2500° C
Mechanical Properties
Material Annealed Hardened Polycrystalline
Vickers hardness 350 750  
Mohs hardness      
Tensile Strenght 495 Mpa    
Creep tension 372 Mpa    
Tension modulus     432.00 GPa
Compressibility modulus     286.00 GPa
Rho ratio     0.25
Izod resistance      
Atomic Properties
Atomic number     44
Atomic weight     101.0700 amu
Photoelectrical function     4.71 eV
Crystal structure     HCP
Atomic beam     0.134 nm
Neutron absorption cross section     3.0 Bams
Electronic structure     Kr 4d7 5s1
Valency numbers     0.1.2.3.4.5.6.7.8
Thermal Properties
Thermal conductivity from 0° to 100° C     117.0 W m-1 K-1
Linear expansion coefficient from 0° to 100°C     9.60 x10-6 K-1
Specific heat at 25°C     238 J K-1 kg-1
Latent heat of fusion     252.0 J g-1
Latent heat of evaporation     5610 J g-1
Electrical Properties
Resistivity at 20°C     7.70 µ cm
Temperature coefficient from 0°C to 100°C     0.00410 K-1
Thermal EMF on hot end plate at 100°C      
Critical point of superconductivity     0.49 k