Nitral® nitriding
At Thermetco, we use the Nitral® process. This is a process similar to gas treatments as it uses reduced pressure (between 200 to 400 mbar) and is performed in vacuum furnaces. Nitral® uses a Alnat N (NH3 + N2O + N2) type atmosphere.

The low pressure Nitral® process combines all the advantages of other nitriding processes (ionic, gaseous or salt bath) and produces clean parts.

Advantages of the Nitral® process :

• Treatment of bored and broached parts or with deep, narrow and blind holes;
• Produces very clean parts;
• Precise selection of the surface layer;
• Minimum to no deformation.

Nitriding is often the perfect complement to vacuum quenching of tool steels.