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Industrial alloys
Precious metals
Iridium Other metals

Physical Properties
Density at 20° C     22.400g / cm³
Boiling point     5300° C
Melting point     2454° C
Mechanical Properties
Material Annealed Hardened Polycrystalline
Vickers hardness 200-300 650  
Mohs hardness      
Tensile Strenght 550-1100 Mpa 1200 Mpa  
Creep tension      
Tension modulus     528.00 GPa
Compressibility modulus     371.00 GPa
Rho ratio     0.26
Izod resistance      
Atomic Properties
Atomic number     77
Atomic weight     192.2200 amu
Photoelectrical function     4.60 eV
Crystal structure     FCC
Atomic beam     0.135 nm
Neutron absorption cross section     425.0 Bams
Electronic structure     Xe 4f14 5d7 6s2
Valency numbers     3.4
Thermal Properties
Thermal conductivity from 0° to 100° C     147.0 W m-1 K-1
Linear expansion coefficient from 0° to 100°C     6.80 x10-6 K-1
Specific heat at 25°C     133 J K-1 kg-1
Latent heat of fusion     135.0 J g-1
Latent heat of evaporation     3186 J g-1
Electrical Properties
Resistivity at 20°C     5.10 µ cm
Temperature coefficient from 0°C to 100°C     0.00450 K-1
Thermal EMF on hot end plate at 100°C      
Critical point of superconductivity     0.11 k