Ni

Pure nickel (Ni) is a ductile, corrosion-resistant transition metal with excellent strength retention at elevated temperatures and outstanding resistance to chemical attack, particularly in alkaline and neutral environments. It is widely used in aerospace propulsion, chemical processing, and electroplating applications where a combination of thermal stability, oxidation resistance, and workability is essential. Engineers select pure nickel when corrosion resistance in aggressive media, thermal fatigue resistance, or compatibility with specific chemical environments outweighs the need for higher strength density offered by nickel-based superalloys.