Iridium Straight Wire

Formula: Ir

Form: Wire

Material: Iridium

CAS Number: 7439-88-5

Commodity: Precious Metals

Purity: 99.9%

Temper: As Drawn

Iridium Straight Wire is part of Goodfellow's range of iridium products, offering 33 variations of straight wire forms. Iridium is known for its high melting point, corrosion resistance, and strength at high temperatures. These properties make iridium straight wire suitable for applications like high temperature thermocouples, spark plug electrodes, and other electrical contacts needing durability and conductivity at extreme conditions. With so many size options, Goodfellow's iridium straight wires support prototyping and production for challenging electronic and thermal environments.

Wishlist

Technical Data Sheet Safety Data Sheet Tolerance Properties

each

Tolerances

Wire

Diameter		±10%
Length		+5% / -1%

Material Properties for Precious Metals

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

Services

Applications

170k+ products

No minimum order

Free delivery worldwide*

Iridium Straight Wire

Tolerances

Material Properties for Precious Metals