Molybdenum Tubing

Molybdenum Tubing Features

Molybdenum is a refractory metal whose melting point of 4753°F (2623°C) is exceeded only by tantalum, osmium, rhenium, tungsten and carbon. It has good workability, high temperature strength, corrosion resistance, and excellent thermal conductivity. Molybdenum tubing can be a good choice for thermocouple protection tubes for many applications from room temperature to over 4000 °F (2204°C), depending upon the atmosphere. It can safely be used in vacuum, inert or reducing atmospheres.

  • Seamless and annealed
  • Available in straight lengths up to 72 inches
  • Cut to custom lengths on request
  • No minimum quantity
  • Stock sizes shipped within 1-2 days
  • Chemistry conforms to ASTM B387, Molybdenum 361; UNS # R03610

See our Technical Data Sheet for Application Notes and Material Properties

Sizes Available from Stock

Outside Outside Diameter Wall Wall Thickness ID
Diameter Tolerance Thickness Tolerance Minimum*
+ +
0.125 0.002 0.002 0.025 0.003 0.003 0.067
0.125 0.002 0.002 0.015 0.003 0.003 0.087
0.187 0.002 0.002 0.038 0.003 0.003 0.1055
0.250 0.0030 0.003 0.050 0.005 0.005 0.137

*The minimum inside diameter shown is calculated based on tolerances for the outside diameter and wall thickness. The actual inside diameter may be slightly smaller than the figures shown in some localized areas. If your application calls for insulators with diameters that vary significantly and/or approach the ID shown, please check with us before placing your order to ensure we can select material that meets your requirements.

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