Rhodium Disk

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.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

each

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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Rhodium Disk

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Material Properties for Precious Metals