AlTiN (Aluminum Titanium Nitride) coating is widely used across various industrial sectors due to its excellent wear resistance and performance in high-temperature environments. This coating is applied to the surfaces of components through the PVD (Physical Vapor Deposition) process, where the combination of aluminum and titanium provides high hardness while enhancing the thermal stability of the coating layer. Consequently, AlTiN coating is effective in extending the life of parts used in high-temperature and high-friction environments such as cutting tools, molds, and bearings. Its applications in the defense and aerospace industries are particularly noteworthy.