This month, we focus on the materials used. Previous print articles have addressed the basics of the process (April) and the details of the process chemistry (May).
A variety of steels can be nitrided. Steels with alloying elements such as aluminum, chromium, vanadium and molybdenum are more easily nitrided because they form nitrides that are stable at nitriding temperature. In general, the higher the percentage of alloying elements, the lower the nitriding temperature required and the higher the hardness achieved.