IR0889 Iridium Wire

Description of Iridium Wire

Iridium is a rare, precious metal that is hard, and brittle, and has a low ductility, which makes it a difficult material to work. In appearance, it is a lustrous, silvery metal. As might be expected from its position in the periodic table, iridium is stable to air and water and is not attacked by any acids, including "aqua regia." Iridium wire is a thin wire-like iridium metal. The resistivity of the iridium wire is 6.03×10-2Ωmm2/m, the tensile strength is 1493MPa, and the elongation is 10%-20%. The iridium wire can be used as high-temperature oxidation-resistant thermocouple material and filament material.

Specification of Iridium and Iridium Alloy Wires

Typical Chemical Analysis

Electrical Properties

Electrical resistivity ( µOhmcm ): 5.1@20°C
Superconductivity critical temperature ( K ): 0.1100
Temperature coefficient ( K⁻¹ ): 0.00450 @0-100°C
Thermal emf against Pt (cold 0C - hot 100C) ( mV ): 0.65

Mechanical Properties

Bulk modulus ( GPa ) ( Hard ): 371.0
Bulk modulus ( GPa ) ( Soft ): 371.0
Hardness - Vickers ( kgf mm⁻² ) ( Hard ): 650
Hardness - Vickers ( kgf mm⁻² ) ( Soft ): 200 – 300
Material condition: Soft
Material condition: Hard
Poisson's ratio ( Hard ): 0.260
Poisson's ratio ( Soft ): 0.260
Tensile modulus ( GPa ) ( Hard ): 528.00
Tensile modulus ( GPa ) ( Soft ): 528.00
Tensile strength ( MPa ) ( Hard ): 1200.00
Tensile strength ( MPa ) ( Soft ): 550.00 - 1100.00

Thermal Properties

Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ): 6.800 @0-100°C
Latent heat of evaporation ( J g⁻¹ ): 3186
Latent heat of fusion ( J g⁻¹ ): 135.00
Specific heat ( J K⁻¹ kg⁻¹ ): 133.0 @25°C
Thermal conductivity ( W m⁻¹ K⁻¹ ): 147.00 @0-100°C

Iridium Wire Applications

Iridium wire is the most corrosion-resistant wire known and is often used for the manufacture and repair of filaments and heaters and electrical applications.

Iridium Wire Packaging

Our iridium wires are carefully handled to prevent damage during storage and transportation and to preserve the quality of our products in their original condition.