Monel 400 is a nickel-copper alloy that is known for its high strength, ductility and resistance to seawater, acids, and alkalies. Monel 400 elbow is a curved pipe fitting that is used to change the direction of a piping system. It is made from Monel 400 grade, which makes it resistant to corrosion. It is commonly used in industries such as chemical processing, petrochemical, oil and gas, and marine. When choosing a Monel 400 elbow, it is essential to consider factors like the temperature and pressure, the type of fluid being transported, and the size of the piping system.