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
- 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
- No additional heat treatment is
needed after nitriding.
- Distortion is minimal since there is