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PRODUCT DATA of Silver
MaterialSilver
General InformationSilver is a soft, ductile, malleable, lustrous metal. It has the highest electrical and thermal conductivity of all metals.
Chemical Composition100Ag
CAS Registry ID7440-22-4
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeHigh
Equivalent DesignationsAg
Space ExperienceGood
PHYSICAL PROPERTIES
Atomic Number47
Atomic Weight108 amu
Work Function4.7 eV
Crystal StructureFace centered cubic (fcc)
Surface Energy1210 to 1260 mJ/m^2
Specific Gravity10.5
ELASTIC PROPERTIES
Tensile Modulus76 GPa
Shear Modulus27.8 GPa
Bulk Modulus100 GPa
Poisson Ratio0.37
Speed of Sound (longitudinal)3600 m/s
Speed of Sound (transverse)1600 m/s
Acoustic Impedance380 MRayls
ELECTRICAL PROPERTIES
Electrical Conductivity105 %IACS
THERMAL PROPERTIES
Thermal Conductivity419 W/m.K
Thermal Expansion Coefficient19.6 μstrain/°C
Melting Range962 °C
Specific Heat0.234 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
EMF vs SCE-0.03 V
Remark: Measured in 3.5% NaCl solution
Data Quality: Design Data
Atomic OxygenSeverely attacked by atomic oxygen. Not to be used on external surfaces in low earth orbit between 200 and 700 km
Silver oxidised in Low Earth Orbit during STS-8 space shuttle flight