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Alloy 625 offers versatile corrosion resistance

INCONEL® nickel-chromium alloy 625 is used for its high strength, excellent fabricability (including joining), and outstanding corrosion resistance.

Service temperatures range from cryogenic to 1800°F (982°C). The strength of nickel alloy 625 is derived from the stiffening effect of molybdenum and niobium on its nickel-chromium matrix; thus precipitation-hardening treatments are not required. This combination of elements is responsible for superior resistance to a wide range of corrosive environments of unusual severity as well as to high-temperature effects such as oxidation and carburization. Tests in geothermal brines indicate that Alloy 625 is highly resistant to hot geothermal fluids comparable to titanium grade 2.

Tests in simulated flue gas desulfurization environments show that Alloy 625 is highly resistant to the environment in comparison to alloys such as T316 stainless steel and comparable to Alloy C276.


  • Exhaust systems
  • Autosport components
  • Seawater applications
  • Aircraft ducting systems
  • Chemical processing equipment
  • Jet engine exhausts
  • Turbine shroud rings
  • Bellows & expansion joints
  • Aircraft exhaust lines & chemical seals


Smiths High Performance is a leading stockholder and supplier of high performance engineering materials to the global motorsport sector. We are supply partners in a range of specialist motorsport markets including Formula 1, Formula E, NASCAR, MOTO GP, WEC & WRC.