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Grade: X-ray Quality
Formula: Rh
Form: Foil/Film/Sheet
Material: Rhodium
CAS Number: 7440-16-6
Commodity: Precious Metals
Purity: 99.9%
Temper: As Rolled
Thickness: 0.025mm
X-ray Quality Rhodium Foil is a highly specialized material valued for its exceptional reflectivity and stability under X-ray irradiation, making it indispensable in precision optical systems. Its surface smoothness and chemical inertness allow for reliable interaction with X-rays while minimizing background noise and unwanted absorption, which is critical in advanced analytical and imaging techniques. This foil is widely applied in synchrotron facilities, X-ray optics manufacturing, and electron microscopy, where maintaining consistent performance under high-energy exposure is essential. Specific technologies benefiting from its properties include X-ray mirrors, monochromators, and calibration targets, where rhodium’s unique electronic and optical constants enable precise energy selection and signal clarity. Its role in pushing the limits of high-resolution spectroscopy, nanostructure analysis, and catalytic surface studies highlights its importance in research and industrial innovation. By offering unmatched performance in environments demanding extreme accuracy, X-ray Quality Rhodium Foil provides enduring value to scientific discovery and industrial applications alike.
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Tolerances

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

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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