Technical Data Sheet
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Gold Disc Single Crystal

Among Goodfellow's range of single crystals is Gold Disc Single Crystal, with 177 variations available. Single crystals like these are used in physics, chemistry, and materials science research, where purity and lack of grain boundaries enable investigations into fundamental properties. Example applications include crystal monochromators or analyzers for x-rays and neutrons, as well as electrodes, where specific crystal orientations are important. With numerous variations, Gold Disc Single Crystal supports diverse research needs requiring high quality single crystals.
Formula: Au
Percentage Purity: 99.999%
Thickness: 1.5mm
Diameter: 5mm
Orientation: -100
Orientation Accuracy: =< 0.5°
Polish: Polished
Surface Finish: =< 0.03µm Ra
CAS Number: 7440-57-5
UOM Code: 947-054-98
SKU: 1000048739
Product Code: AU00-SC-000205

Tolerances

Single Crystal
Orientation See Item
Thickness +2% / -1%
Length +2% / -1%
Disc
Diameter +2% / -1%
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Tolerances

Single Crystal
Orientation See Item
Thickness +2% / -1%
Length +2% / -1%
Disc
Diameter +2% / -1%
Technical Data Sheet
Safety Data Sheet

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Material Properties for Precious Metals

Atomic Properties
Element Value
Atomic number 79
Crystal structure Face centred cubic
Electronic structure Xe 4f¹⁴ 5d¹⁰ 6s¹
Valences shown 1,3
Atomic weight( amu ) 196.9665
Thermal neutron absorption cross-section( Barns ) 98.8
Photo-electric work function( eV ) 4.8
Atomic radius - Goldschmidt( nm ) 0.144
Ionisation potential( No./eV ) 1/ 9.22
Ionisation potential( No./eV ) 2/ 20.5
Mechanical Properties
Element Value
Material condition Soft
Material condition Hard
Poisson's ratio 0.42
Poisson's ratio 0.42
Bulk modulus( GPa ) 171
Bulk modulus( GPa ) 171
Tensile modulus( GPa ) 78.5
Tensile modulus( GPa ) 78.5
Hardness - Vickers( kgf mm⁻² ) 20-30
Hardness - Vickers( kgf mm⁻² ) 60
Tensile strength( MPa ) 130
Tensile strength( MPa ) 220
Yield strength( MPa ) 205
Yield strength( MPa ) -
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 2.20@20@20°C
Temperature coefficient( K⁻¹ ) 0.004@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.74
Physical Properties
Element Value
Boiling point( C ) 3080
Density( gcm⁻³ ) 19.3@20°C
Thermal Properties
Element Value
Melting point( C ) 1064.4
Latent heat of evaporation( J g⁻¹ ) 1738
Latent heat of fusion( J g⁻¹ ) 64.9
Specific heat( J K⁻¹ kg⁻¹ ) 129@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 318@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 14.1@0-100°C
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