Nitriding is a thermochemical case hardening process that diffuses nitrogen into the surface of a metal to create a case-hardened surface. The metal often is placed in contact with ammonia, which allows the transfer of nitrogen to the surface during its thermal decomposition to nitrogen and hydrogen. This process is most often used on low-alloy steels. They are also used on titanium, aluminium and molybdenum.

Typical applications for Nitriding include gears, crankshafts, camshafts, cam followers, valve parts, extruder screws, die-casting tools, forging dies, extrusion dies, firearm components, injectors and plastic-mold tools.

If your application requires a heavy load and an increase of surface hardening, wear resistance and fatigue life and it’s a ferrous material then it can be gas nitrided up to 5% chromium. Another amazing benefit of gas nitriding is quenching is unneeded in addition if large batch sizes are needed the only constraint is the size of the furnace.

If you are looking to learn more about Nitriding please watch An Introduction to Nitriding Processes and Equipment on Gasbarre’s YouTube channel by Gasbarre’s very own Mike Harrison who has over 16 years of experience in the heat treat field.


With products that range from batch furnaces to continuous belt furnaces, pusher furnaces, vacuum furnaces, humpback furnaces, and much more, Gasbarre can solve any application challenge with the expertise and passion needed to drive your success. Gasbarre Thermal Processing Systems specializes in the design and manufacture of precision controlled nitriding equipment specific to the thermal processing industry.

Our equipment is designed to meet strict automotive and aerospace quality requirements including CQI-9 and AMS 2750; we are also ISO 17025 accredited.

Please give us a call if you would like to learn more about where we are going. Call (734.656.2000) or email ( [email protected] ) us today!

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