Basic properties of INCONEL alloy 617 UNS N06617/W.Nr. 2.4663a INCONEL alloy 617 (UNS N06617/W.Nr. 2.4663a) is a solid solution strengthened nickel-chromium-cobalt-molybdenum alloy with excellent high temperature strength and oxidation resistance. The chemical composition of the alloy mainly includes nickel (Ni), chromium (Cr), cobalt (Co), molybdenum (Mo) and aluminum (Al), with a nickel content of 44.5-56%,