IR0889 Iridium Wire

Description of Iridium Wire

Iridium is a rare noble metal. It is hard and brittle with a low ductility, which makes its processing difficult. Its appearance is that of a lustrous, silvery metal. Given its position in the periodic table, Iridium is stable in air and water and is not attacked by any acid, not even aqua regia. Iridium Wire is a thin, wire-shaped form of Iridium. The specific resistance of the Iridium Wire is 6,03×10⁻² Ωmm²/m, the tensile strength is 1493 MPa and the elongation is 10%–20%. The Iridium Wire may be used as an oxidation-resistant high-temperature thermocouple material and as a filament material.

Specifications for Wires made of Iridium and Iridium Alloys

Typical Chemical Analysis

Electrical Properties

Electrical Resistance (µΩcm): 5.1 @20°C
Critical Temperature for Superconductivity (K): 0.1100
Temperature Coefficient (K⁻¹): 0.00450 @0–100°C
Thermoelectric EMF relative to Pt (cold 0°C – hot 100°C) (mV): 0.65

Mechanical Properties

Elastic Modulus (GPa) (Hard): 371.0
Elastic Modulus (GPa) (Soft): 371.0
Vickers Hardness (kgf/mm²) (Hard): 650
Vickers Hardness (kgf/mm²) (Soft): 200–300
Material Condition: Soft
State of Material: 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 (×10⁻⁶ K⁻¹): 6.800 @0–100°C
Latent Heat of Vaporisation (J/g): 3186
Latent Heat of Fusion (J/g): 135.00
Specific Heat (J/K·kg): 133.0 @25°C
Thermal Conductivity (W/m·K): 147.00 @0–100°C

Applications of Iridium Wire

1. Electrical Spark Discharge: Iridium Wire is used for manufacturing electrodes in electric discharge machining, for example as electrodes for material cutting and processing and as spark plug electrodes.
2. Catalysts for Chemical Reactions: Iridium metal exhibits specific catalytic properties in defined chemical reactions. Consequently, Iridium Wire is employed in the production of catalysts for redox reactions and organic synthesis.
3. Medical Devices: Due to its biocompatibility and corrosion resistance, Iridium Wire is utilised in the production of implantable medical devices and medical electrodes.
4. Thermocouples: Iridium Wire is used for the manufacture of high-temperature thermocouples to measure temperatures in high-temperature environments, given its high temperature stability.
5. Aerospace Industry: In the aerospace industry, Iridium Wire is applied in components that require high temperatures and corrosion resistance, such as rocket nozzles and gas turbine components.

Packaging of Iridium Wire

Our Iridium wires are handled with care to avoid damage during storage and transport, thereby ensuring that the quality of our products remains in their original condition.