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Ion (Plasma) Nitriding

UltraGlow® Ion Nitriding (also known as Plasma Nitriding) is a case-hardening treatment which uses glow discharge technology to introduce nitrogen ions to the surface of a metal for diffusion into the part.

Parts Under Glow at Advanced Heat Treat Corp.

The Ion Nitriding Process

The ion nitriding process is carried out in a vacuum vessel where a high-voltage electrical charge forms plasma, causing nitrogen ions to accelerate and impinge on the metal. When the nitrogen ions bombard the part they heat up the metal, clean the surface, and absorb nitrogen into the surface. This process is sometimes referred to as ion nitrocarburizing or plasma ferritic nitrocarburizing (FNC).

Benefits of UltraGlow® Ion (Plasma) Nitriding:

  • Extends part/tool life
  • Selective hardening process
  • Reusable masking (versus coatings or other surface treatments)
  • Adds performance, fatigue strength and endurance
  • Enhances surface lubricity
  • Reduces erosion
  • Increases material flow in molds and dies

AHT UltraGlow® Ion Nitriding Capabilities:

The working parameters of Advanced Heat Treat Corp.'s ion nitriding equipment are very large, up to 160" in diameter, 360" in length, and up to 60,000 lbs. in weight. (View video of our longest part ever here.)

Advanced Heat Treat Corp.'s UltraGlow® Ion Nitriding is your answer to an economical way of heat treating rolls, shafts, extruder screws, stamping dies and much more, and over 50 nitriding vessels are offered between three Advanced Heat Treat facilities: 


Focused on Nitriding Quality

AHT is Nadcap accredited* and can certify to the AMS 2759/8 specification among a number of other specifications. Please inquire for additional information. 

*Click here to view certificate

A key benefit of Ion (Plasma) Nitriding is the capability to mechanically mask parts. Learn about mechanically masking stainless steel HERE.

Ion Nitriding Mechanical Masking

Learn about Ion Nitriding even more with these whitepapers, case studies, etc.


Fun Fact about AHT's Founder & CEO, Gary Sharp:

Ion Nitriding Leader