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Formula: Ir
Form: Wire
Material: Iridium
CAS Number: 7439-88-5
Commodity: Precious Metals
Temper: As Drawn

Iridium Spooled Wire

Iridium Spooled Wire is a high-performance product offered by Goodfellow within their extensive range of specialty metals. This ultra-high purity iridium wire is known for its extreme corrosion resistance and high-temperature strength, maintaining structural integrity up to 2000°C. With over 181 diameter and length variations, Iridium Spooled Wire can be customized for a wide array of scientific and industrial applications like high-temperature furnaces, crucibles, and thermocouple elements where oxidation resistance and thermal stability are critical. The exceptional properties of Iridium Spooled Wire make it an ideal choice for extreme environment applications.
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Tolerances

Wire
Diameter ±10%
Length +5% / -1%

Material Properties for Precious Metals

Atomic Properties
Mechanical Properties
Electrical Properties
Physical Properties
Thermal Properties
Atomic Properties
Element Value
Atomic number 77
Crystal structure Face centred cubic
Electronic structure Xe 4f¹⁴ 5d⁷ 6s²
Valences shown 3, 4
Atomic weight( amu ) 192.22
Thermal neutron absorption cross-section( Barns ) 425
Photo-electric work function( eV ) 4.6
Natural isotope distribution( Mass No./% ) 191/ 37.3
Natural isotope distribution( Mass No./% ) 193/ 62.7
Atomic radius - Goldschmidt( nm ) 0.135
Mechanical Properties
Element Value
Material condition Soft
Material condition Hard
Poisson's ratio 0.26
Poisson's ratio 0.26
Bulk modulus( GPa ) 371
Bulk modulus( GPa ) 371
Tensile modulus( GPa ) 528
Tensile modulus( GPa ) 528
Hardness - Vickers( kgf mm⁻² ) 650
Hardness - Vickers( kgf mm⁻² ) 200-300
Tensile strength( MPa ) 550-1100
Tensile strength( MPa ) 1200
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 5.1@20@20°C
Superconductivity critical temperature( K ) 0.11
Temperature coefficient( K⁻¹ ) 0.0045@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.65
Physical Properties
Element Value
Boiling point( C ) 4130
Density( gcm⁻³ ) 22.4@20°C
Thermal Properties
Element Value
Melting point( C ) 2410
Latent heat of evaporation( J g⁻¹ ) 3186
Latent heat of fusion( J g⁻¹ ) 135
Specific heat( J K⁻¹ kg⁻¹ ) 133@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 147@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 6.8@0-100°C

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