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PRODUCT DATA of Gold
MaterialGold
Chemical Composition100Au
CAS Registry ID7440-57-5
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Equivalent DesignationsAu
Space ExperienceGood
PHYSICAL PROPERTIES
Atomic Number79
Atomic Weight196.96655
Work Function5.1 eV
Crystal StructureFace centered cubic (fcc)
Surface Energy1500 mJ/m^2
Specific Gravity19.3
ELASTIC PROPERTIES
Tensile Modulus80.6 GPa
Bulk Modulus169 GPa
Poisson Ratio0.42
Speed of Sound (longitudinal)3200 m/s
Speed of Sound (transverse)1200 m/s
Acoustic Impedance62.6 MRayls
ELECTRICAL PROPERTIES
Electrical Volume Resistivity2.35e-8 ohm.m
Electrical Conductivity77 %IACS
THERMAL PROPERTIES
Thermal Conductivity297 W/m.K
Thermal Expansion Coefficient14.2 μstrain/°C
Melting Range1060 °C
Specific Heat0.13 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
EMF vs SCE0.15 eV
Remark: Measured in 3.5% NaCl solution
Data Quality: Design Data