Tungsten and molybdenum are both common and crucial materials for high-temperature heating elements, especially in high-temperature furnaces under vacuum or protective atmospheres. Both belong to refractory metals (high-melting-point metals), but they differ in properties, applications, and precautions when used as heating conductors.
Tungsten and molybdenum are both common and crucial materials for high-temperature heating elements, especially in high-temperature furnaces under vacuum or protective atmospheres. Both belong to refractory metals (high-melting-point metals), but they differ in properties, applications, and precautions when used as heating conductors.
Extremely High Melting Point: This is their primary requirement for serving as heating elements.
Tungsten: 3422°C (the highest among all metals)
Molybdenum: 2623°C
Good High-Temperature Strength: Maintain structural integrity and resist deformation at high temperatures.
High Operating Temperature: Both can work continuously at temperatures far higher than those tolerated by most other metals.
Vacuum furnaces, sapphire crystal growth furnaces, hydrogen sintering furnaces, semiconductor diffusion furnaces, glass melting electrodes, and high-temperature components for aerospace vehicles.
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