Alloy 400 is a copper-nickel alloy with excellent corrosion resistance, good corrosion resistance in various media, good welding performance, high strength and moderate strength. This alloy has been widely used in many occasions. It has excellent resistance to pitting corrosion and stress corrosion in salt water or sea water. Especially resistant to hydrofluoric acid and hydrochloric acid. It is widely used in chemical, petroleum and marine industries.
K438 is one of the casting nickel-based superalloys with the best heat and corrosion resistance