Molybdenum

Molybdenum is a silvery white metal. It is softer and more ductile than tungsten, its sister element.
Atomic No. 42
Atomic Wt. 95.94
Specific gravity 10.34
Melting Point 2617°C
Coefficient of Thermal Expansion 4.8 X 10^-6/°K
Specific Heat 0.060 cal/g/°K
Ultimate Tensile Strength (Room Temperature, Annealed) 95–115 ksi
Yield Tensile Strength (Room Temperature, Annealed) 80–95 ksi
Poisons Ratio 0.30
Modulus of Elasticity 4.63 X 10⁷ psi
Recrystallization Temperature 900°C to 1300°

General Corrosion Resistance

Molybdenum has the ability to withstand many non-oxidizing mineral and organic acids. It will corrode in alkalis in the presence of oxidizing materials. The metal is not affected by many molten metals and glasses. It is resistant to molten lead, gallium, lithium, sodium, potassium and bismuth. Molybdenum begins to oxidize in air at a temperature of 400°C.

This data is based on laboratory testing only. Your in-plant results may differ. Testing is recommended under other conditions as needed.

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