《Inconel alloy 625》.pdf

INCONEL® nickel-chromium alloy 625 (UNS The outstanding and versatile corrosion re- N06625/W.Nr. 2.4856) is used for its high strength, sistance of INCONEL alloy 625 under a wide range of excellent fabricability (including joining), and out- temperatures and pressures is a primary reason for its standing corrosion resistance. Service temperatures wide acceptance in the chemical processing field. Be- range from cryogenic to 1800°F (982°C). Composition cause of its ease of fabrication, it is made into a variety is shown in Table 1. of components for plant equipment. Its high strength Strength of INCONEL alloy 625 is derived enables it to be used, for example, in thinner-walled from the stiffening effect of molybdenum and niobium vessels or tubing than possible with other materials, on its nickel-chromium matrix; thus precipitation- thus improving heat transfer and saving weight. Some hardening treatments are not required. This combina- applications requiring the combination of strength and tion of elements also is responsible for superior re- corrosion resistance offered by INCONEL alloy 625 sistance to a wide range of corrosive environments of are bubble caps, tubing, reaction vessels, distillation unusual severity as well as to high-temperature effects columns, heat exchangers, transfer piping, and valves.