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Formula: Ag
Form: Disk
Material: Silver
CAS Number: 7440-22-4
Commodity: Precious Metals
Goodfellow's silver disks, available at a maximum purity of 99.999% (5N), are highly sought after for their exceptional electrical and thermal conductivity, as well as their unique optical properties. Silver's unparalleled conductivity makes it invaluable in high-end electronics and electrical contacts. Its antimicrobial properties find applications in medical devices and water purification systems. In the field of optics, silver is crucial for producing high-quality mirrors and specialized coatings. For research purposes, ultra-pure silver is essential in studying plasmonics, developing advanced catalysts, and exploring new methods of energy storage and conversion. Its role in emerging technologies like printed electronics and advanced photovoltaics underscores its continued significance in both fundamental research and cutting-edge industrial applications.
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 47
Crystal structure Face centred cubic
Electronic structure Kr 4d¹⁰ 5s¹
Valences shown 1-2,2
Atomic weight( amu ) 107.8682
Thermal neutron absorption cross-section( Barns ) 63.8
Photo-electric work function( eV ) 4.7
Natural isotope distribution( Mass No./% ) 107/ 51.83
Natural isotope distribution( Mass No./% ) 109/ 48.17
Atomic radius - Goldschmidt( nm ) 0.144
Ionisation potential( No./eV ) 2/ 21.5
Ionisation potential( No./eV ) 1/ 7.58
Ionisation potential( No./eV ) 3/ 34.8
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.367
Poisson's ratio 0.367
Bulk modulus( GPa ) 103.6
Bulk modulus( GPa ) 103.6
Tensile modulus( GPa ) 82.7
Tensile modulus( GPa ) 82.7
Izod toughness( J m⁻¹ ) 5
Hardness - Vickers( kgf mm⁻² ) 95
Hardness - Vickers( kgf mm⁻² ) 25
Tensile strength( MPa ) 330
Tensile strength( MPa ) 172
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 1.63@20@20°C
Temperature coefficient( K⁻¹ ) 0.0041@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.74
Physical Properties
Element Value
Boiling point( C ) 2212
Density( gcm⁻³ ) 10.5@20°C
Thermal Properties
Element Value
Melting point( C ) 961.9
Latent heat of evaporation( J g⁻¹ ) 2390
Latent heat of fusion( J g⁻¹ ) 103
Specific heat( J K⁻¹ kg⁻¹ ) 237@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 429@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 19.1@0-100°C

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