Inconel725 is a nickel-chromium-molybdenum-niobium alloy renowned for its exceptional corrosion resistance and superior strength achieved through aging hardening. It maintains comparable corrosion resistance to Inconel 625, the latter being extensively used in extreme corrosive environments. The strength of aged Inconel725 approximately doubles that of annealed Inconel 625. Crucially, as Inconel625 achieves its strength through heat treatment rather than cold working, it retains high toughness and ductility. Moreover, this alloy can be applied to large or non-uniform cross-sections that cannot be strengthened through cold work hardening.
The high nickel and chromium content provides corrosion resistance in both reducing and oxidizing environments. The substantial molybdenum content enhances resistance to reducing media and offers exceptional protection against pitting and crevice corrosion. Furthermore, the elemental bonding confers the alloy with resistance to hydrogen embrittlement and stress corrosion cracking.
Inconel725 demonstrates exceptional corrosion resistance and high strength for a wide range of applications. This alloy is used in acid gas service components including suspension brackets, landing nozzles, side pocket spindles, and polished hole receivers, effectively resisting corrosion from hydrogen sulfide, chlorides, and carbon dioxide. It also serves as a high-strength fastener for marine applications, demonstrating resistance to seawater corrosion, pitting, and crevice attack.
The density of the alloy is ρ=8.31g/cm³.
