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Refractory metals

The refractory metals molybdenum, TZM, tungsten and tantalum are produced by powder metallurgy, i.e. by pressing powders at high pressures, sintering and forming. Typical for this material group is the high density of > 10.2g/cm3 and the high melting point of > 2893K (2600°C).

Molybdenum
As a pure metal, molybdenum has similar properties to tungsten, but is much easier to process. As a result, this metal has the widest range of applications.

Titanium-Zircone-Molybdenum
short TZM, is a molybdenum alloy with small proportions of titanium, zirconium and carbon. These increase the recrystallization temperature and improve the mechanical properties.

Tungsten
As pure tungsten and as tungsten-based materials, tungsten has the highest melting point of all metals - and a particularly high specific weight.

Tantalum
is used as a pure metal because of its special chemical resistance and good machinability.

Refractory metals are processed in many industries

  • high-temperature furnace construction
  • electrical and electronic industry
  • aviation
  • welding technology
  • motor vehicle industry
  • glass production
  • mechanical engineering

The areas of application are correspondingly diverse – for example

  • heating conductors, radiant shields, sample carriers and other components for high-temperature furnaces
  • sintering boats, transport equipment for sintering technology
  • evaporation boats for evaporation technology
  • electrodes for the electrical heating of tubs in glass production
  • round blanks, furnace components for single crystal draw furnaces in semiconductor production