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Formula: Rh
Form: Disk
Material: Rhodium
CAS Number: 7440-16-6
Commodity: Precious Metals
Purity: 99.9%
Temper: As Rolled
Available in a range of 255 variations, our Rhodium disks offer you the benefits of Rhodium, which is a hard, silvery-white metal that’s highly reflective and resistant to corrosion. These disks are manufactured to tight tolerances and uniform thickness for applications that require precision parts, such as scientific instrumentation, electrodes, and reflectors for high-power lasers. With so many variations to choose from, we can provide Rhodium disks tailored to your specific application requirements.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Disk
Thickness >0.05mm ±10%
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%

Material Properties for Precious Metals

Atomic Properties
Element Value
Atomic number 45
Crystal structure Face centred cubic
Electronic structure Kr 4d⁸ 5s¹
Valences shown 2,3,4,5,6
Atomic weight( amu ) 102.9055
Thermal neutron absorption cross-section( Barns ) 150
Photo-electric work function( eV ) 4.6
Atomic radius - Goldschmidt( nm ) 0.134
Ionisation potential( No./eV ) 1/ 7.46
Ionisation potential( No./eV ) 3/ 31.1
Ionisation potential( No./eV ) 2/ 18.1
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.26
Poisson's ratio 0.26
Bulk modulus( GPa ) 276
Bulk modulus( GPa ) 276
Tensile modulus( GPa ) 379
Tensile modulus( GPa ) 379
Hardness - Vickers( kgf mm⁻² ) 300
Hardness - Vickers( kgf mm⁻² ) 120
Tensile strength( MPa ) 1380-2070
Tensile strength( MPa ) 690-760
Yield strength( MPa ) 69-275
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 4.7@20@20°C
Temperature coefficient( K⁻¹ ) 0.0044@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.7
Physical Properties
Element Value
Boiling point( C ) 3727
Density( gcm⁻³ ) 12.4@20°C
Thermal Properties
Element Value
Melting point( C ) 1965
Latent heat of evaporation( J g⁻¹ ) 4800
Latent heat of fusion( J g⁻¹ ) 210
Specific heat( J K⁻¹ kg⁻¹ ) 244@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 150@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8.5@0-100°C

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