Carbonitriding gives the surface layer of the treated components a much higher hardness. Their wear resistance is increased and the mechanical properties are improved while reducing distortion.

In the carbonitriding process the carburizing atmosphere is enriched with nitrogen. The simultaneous diffusion of carbon and oxygen improves the hardenability of the surface. Nitrogen enrichment also reduces the hardening temperature and the critical cooling rate, which reduces distortion.


  • High surface hardness
  • Better hardenability
  • Improved tempering properties
  • Reduced distortion due to the use of milder quenching media
  • Higher wear protection

Optional: Low-temperature cooling treatment for conversion of the residual austenite and stabilisation of the martensite.