Why is molybdenum useful in jet engines and other high-temperature equipment?

Molybdenum is highly valued for jet engines and other high-temperature equipment because it possesses exceptional physical and chemical properties that allow it to maintain structural integrity under extreme conditions.

Key reasons for its utility include:

• High-Temperature Strength: Molybdenum and its alloys retain useful strength at temperatures where most other metals and alloys would melt. It is a vital component in superalloys used in jet engines, combustion liners, and afterburner parts, where it uniquely contributes "hot strength" and resistance to corrosion.12
• Thermal Properties: It features a high melting point of 2,610 °C (4,730 °F), high thermal conductivity, and a low expansion coefficient.3
• Alloying Benefits: When added to other metals, even in small quantities, molybdenum significantly improves toughness, abrasion resistance, and creep resistance. It is particularly effective at increasing the hardenability of iron and steel.31

Because of these characteristics, molybdenum is essential for demanding applications in aviation, space exploration, and gas turbines, where components must withstand intense operating temperatures.24