Zirconium Nitride (ZrN) Zirconium Nitride is another specialty coating developed to perform in areas that TiN has proven unsuccessful. ZrN possesses a very low deposition temperature, which makes it most suitable for temperature-sensitive substrates. Also, ZrN had excellent corrosion-resistance, lubricity and hardness to suit many applications. A coating that works well with non-ferrous materials, ZrN has a unique ability to reduce the build-up edge on cutting tools and leave a better surface finish on materials its machined. ZrN is appropriate for machining Titanium and Aluminum Alloys, Nickel, Brass, Copper, Cast Iron and Zinc.