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Formula: Ir
Form: Pellet/Lump
Material: Iridium
CAS Number: 7439-88-5
Commodity: Precious Metals
Purity:
99.9%
Maximum Lump Size:
15mm
Iridium Pellets Casting Grain are high-density spherical beads from Goodfellow's range of pellet products. With a density of 22.42 g/cc and melting point of 2446°C, iridium pellets exhibit excellent high temperature strength. These properties make iridium pellets ideal for applications like crucibles, thermocouple elements, and electrical contacts requiring thermal and oxidation resistance. The uniform size distribution of the pellets also lends well to precise metering and repeatable melting behavior during casting processes. As part of Goodfellow's pellet range, the iridium pellets are manufactured to tight sphericity and size standards.
Tolerances
Pellet/Lump
| Maximum Lump Size | Nominal |
|---|
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 |
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Maximum Lump Size: 25mm
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Maximum Lump Size: 4mm
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Iridium Foil (Light Tight) Formula: Ir
Percentage Purity: 99.9%
Temper: As Rolled
Thickness: 0.5mm
Length 1: 25mm
Length 2: 25mm
CAS Number: 7439-88-5
UOM Code: 017-993-98
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Iridium Foil Formula: Ir
Percentage Purity: 99.9%
Temper: As Rolled
Thickness: 0.01mm
Length 1: 20mm
Length 2: 40mm
CAS Number: 7439-88-5
UOM Code: 234-767-16
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Iridium Rod Formula: Ir
Percentage Purity: 99.9%
Diameter: 5mm
Length: 25mm
Temper: As Drawn
CAS Number: 7439-88-5
UOM Code: 009-026-29
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Iridium Thin Film Disk Formula: Ir
Percentage Purity: 99.9%
Thickness: 0.1µm
Diameter: 10mm
Area Density: 224µg/cm²
Support: Permanent Mylar® 3.5µm
CAS Number: 7439-88-5
UOM Code: 636-983-05
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