molybdenum logo

Molybdenum Physical Properties

Property Value
Atomic Number 42
Atomic Weight 95.94
Atomic Volume 9.41
Lattice Type Body Centered Cube
Natural Isotopes 92, 94, 95, 96, 97, 98, 100
Density at 20 °C 10.22 gr/cc
Melting Point 2610 °C
Boiling Point 5560 °C
Linear Coefficient of Thermal Expansion 4.9 x 10-6/°C
Thermal Conductivity .35 cal/cm2/cm °C/sec
Specific Heat .061 cal/g/ °C
Electrical Conductivity 30% IACS
Electrical Resistivity at 20 °C 5.7 microhms-cm
Temperature Coefficient of Electrical Resistivity .0046 per °C (0 - 100 °C)
Tensile Strength (20 °) 120,000 - 200,000 psi
Tensile Strength (500 °C) 35,000 - 65,000 psi
Tensile Strength (1000 °C) 20,000 0 30,000 psi
Modulus of Elasticity (20 °C) 46 x 106 psi
Modulus of Elasticity (500 °C) 41 x 106 psi
Modulus of Elasticity (1000 °C) 39 x 106 psi
Poisson's Ratio 0.321
Spectral Emissivity (0.65? wavelength) 0.37 (1000 °C)
Total Emissivity (at 1500 °C) 0.19
Total Emissivity (at 2000 °C) 0.24
Working Temperature 1600 °C and less
Recrystallization Temperature 900 °C - 1200 °C
Stress Relieving Temperature 800 °C