Hard chrome is one of the coating metallurgy that is used among metal plating technologies to increase the hardness and corrosion resistance of metals. In this process, a thin layer of chromium is created on the metal surface, which increases the physical and chemical properties of the metal. This coating is resistant to corrosion, wear and even high temperatures and is used to increase the useful life and efficiency of mechanical and industrial parts. For example, hard chrome is commonly used on engine parts, cutting tools, and hydraulic devices.