Incoloy 800 Advanced Nickel Alloy nickel-iron-chromium alloy

Alloy 800 is a high-performance ultra-alloy made of iron, chromium, and nickel, which exhibits excellent strength and resistance to oxidation and carburization in high-temperature environments. It also has outstanding resistance to stress-corrosion cracking and good creep and rupture strength.

Alloy 800 finds numerous applications in various industries, including heat treating tools, radiant tubes, thermowells, retorts, muffles, lead pots, heat exchangers, tubing, and high-temperature applications.

Incoloy® 800H is a member of the 800 series of alloys, which is a nickel-iron-chromium alloy. Incoloy 800H has similar characteristics to other 800 alloys, including excellent resistance to oxidation, sulfidation, and carburization, and resistance to prolonged exposure to elevated temperatures. The addition of carbon and annealing treatment allows for greater creep and rupture properties above 1100° F (600° C). Incoloy 800H is also readily machinable by standard methods and can be welded with high-temperature materials.

Incoloy 800H has a slightly different chemical composition compared to other 800 alloys, with Fe content of 39.5% min, Ni content of 30-35%, and Cr content of 19-23%. It also contains Al+Ti at 0.23-1.20% and C at 0.05-0.10%.

Incoloy 800H and Nickel Alloy 800H are used by many industries, particularly those dealing with temperatures above 1100° F (600° C). These industries include manufacturing furnace parts and equipment, petrochemical and chemical processing, equipment for heat-treating, pressure veins, and heat exchangers, and hydrocarbon processing.