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Master Bond adhesives

Iridium, Ir; Annealed
Categories: Metal; Nonferrous Metal; Precious Metal; Pure Element

Material Notes: Annealed applies only to tensile and/or hardness values; other property values are typical of the element.

Physical Form: Silver-White Metal; Cubic

See entry for cold drawn samples.

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Physical PropertiesMetricEnglishComments
Density 22.65 g/cc0.8183 lb/in³
 
Chemical PropertiesMetricEnglishComments
Atomic Mass 192.217192.2171995
Atomic Number 7777
Thermal Neutron Cross Section 440 barns/atom440 barns/atom
X-ray Absorption Edge 0.16286 Å0.16286 ÅK
 0.92425 Å0.92425 ÅLI
 0.967 Å0.967 ÅLII
 1.10599 Å1.10599 ÅLIII
Electrode Potential 1.0 V1.0 V
Electronegativity 2.22.2Pauling
Ionic Radius 0.680 Å0.680 ÅCrystal Ionic Radius for Valence +4
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 352352Converted from Vickers for 3000 kg load/10 mm ball Brinell test.
Hardness, Rockwell A 6969Converted from Vickers.
Hardness, Rockwell C 3737Converted from Vickers.
Hardness, Vickers 370370
Tensile Strength, Ultimate 1000 MPa145000 psi
Modulus of Elasticity 524 GPa76000 ksi
Poissons Ratio 0.260.26
Shear Modulus 208 GPa30200 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000470 ohm-cm0.00000470 ohm-cm
Magnetic Susceptibility 1.5e-71.5e-7cgs/g
Critical Magnetic Field Strength, Oersted 15.95 - 16.0515.95 - 16.05
Critical Superconducting Temperature 0.1115 - 0.1135 K0.1115 - 0.1135 K
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 144 J/g61.9 BTU/lb
Heat of Vaporization 636 J/g274 BTU/lb
CTE, linear 6.80 µm/m-°C
@Temperature 20.0 °C
3.78 µin/in-°F
@Temperature 68.0 °F
Specific Heat Capacity 0.1082 J/g-°C0.02586 BTU/lb-°FGas
 0.135 J/g-°C0.0323 BTU/lb-°F
Thermal Conductivity 147 W/m-K1020 BTU-in/hr-ft²-°F
Melting Point 2443 °C4429 °F
Boiling Point 4428 °C8002 °F
Heat of Formation 0.000 kJ/mol0.000 kJ/molCrystal
 665.3 kJ/mol665.3 kJ/molGas
 
Optical PropertiesMetricEnglishComments
Emissivity (0-1) 0.300.30650 nm, unoxidized
 
Component Elements PropertiesMetricEnglishComments
Iridium, Ir 100 %100 %
 
Descriptive Properties
CAS Number7439-88-5
SolubilitySoluble in Aqua Regia

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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