Inconel is a registered trademark of Special Metals Corporation that refers to a family of austenitic nickel-chromium-based superalloys. Inconel alloys are typically used in high temperature applications. It is often referred to in English as “Inco” (or occasionally “Iconel”). Common trade names for Inconel include: Inconel 625, Chronin 625, Altemp 625, Haynes 625, Nickelvac 625 and Nicrofer 6020.
Different Inconels have widely varying compositions, but all are predominantly nickel, with chromium as the second element.
|Inconel||Element (% by mass)|
Different Inconel alloys
Inconel 600: Solid solution strengthened
Inconel 625: Acid resistant, good weldability
Inconel 690: Low cobalt content for nuclear applications, and low resistivity
Inconel 718: Gamma double prime strengthened with good weldability
Inconel 751: Increased aluminum content for improved rupture strength in the 1600′F range
Inconel 792: Increased aluminum content for improved high temperature corrosion properties, used especially in gas turbines
Inconel 939: Gamma prime strengthened with good weldability
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