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PRODUCT DATA of Lead
MaterialLead
Chemical Composition100Pb
CAS Registry ID7439-92-1
EXPERIENCE IN PRACTICE
Equivalent DesignationsPb
PHYSICAL PROPERTIES
Atomic Number82
Atomic Weight207 amu
Work Function4 eV
Crystal StructureFace centered cubic (fcc)
Specific Gravity11.4
ELASTIC PROPERTIES
Tensile Modulus16.1 GPa
Bulk Modulus45.8 GPa
Poisson Ratio0.44
Speed of Sound (longitudinal)2200 m/s
Speed of Sound (transverse)700 m/s
Acoustic Impedance24.6 MRayls
ELECTRICAL PROPERTIES
Electrical Volume Resistivity2.06e-7 ohm.m
Superconductivity Critical Temperature-266 °C
THERMAL PROPERTIES
Thermal Conductivity35.3 W/m.K
Thermal Expansion Coefficient29 μstrain/°C
Melting Range328 °C
Specific Heat0.159 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
EMF vs SCE-0.5 V
Remark: Measured in 3.5% NaCl solution
Data Quality: Design Data
Sublimation10-4mm/year at 270°C
10-2mm/year at 330°C
1 mm/year at 430°C
SPECIAL RECOMMENDATIONS
Lessons LearnedLead is known to produce a continuum of diverse biological effects in humans, depending on the dose, which are usually associated with high and long-term exposure.