GAS NITRIDING is a surface hardening process in which nitrogen is diffused into the surface of a part to create a layer of hard nitride particles. This imparts abrasion and wear resistance to the part. Parts to be nitrided should be in the finish machined condition and previously heat treated to the desired mechanical properties.
NITRIDING OFFERS SEVERAL ADVANTAGES COMPARED TO OTHER CASE HARDENING PROCESSES
- Very high case hardness – up to 70 HRC.
- Nitriding is conducted at relatively low temperatures, around 950℉ - 1050℉. The nitriding temperature is chosen to be below the steel tempering temperature, so that there is no loss in strength.
- No additional heat treatment is needed after nitriding.
- Distortion is minimal since there is no quenching.