Definition

M50 is a high-alloy tool steel designed for bearings operating at high temperatures and high rotational speeds. It is primarily used in the aerospace industry, where standard bearing steels ail to provide sufficient thermal stability and resistance to fatigue.

Features

  • High hardness even at elevated temperatures
  • Excellent resistance to fatigue damage
  • High wear resistance
  • Stable microstructure at temperatures above 200 °C
  • Good dimensional stability under thermal cycling
  • Lower corrosion resistance – requires protection
  • Suitable for extreme operating conditions

Applications

  • Bearings in aircraft engines
  • High-speed turbines
  • Gear systems in aerospace applications
  • Components exposed to high temperatures and loads
  • Aerospace, defense, and space industries
  • Specialized precision bearings for extreme environments

Conclusion

M50 is a specialized bearing steel developed for extreme conditions involving high temperature, speed, and load. In aerospace applications, it is considered a standard material for critical components.