Incoloy 800/800H/800HT.. High-temperature nickel-based alloys used in heat exchange tubes and furnace components

Incoloy 800 (Base Grade):​ Resists high-temperature corrosion (oxidation/carburization), but has the weakest high-temperature strength among the 800 series. Primarily used for load-bearing applications at medium to low temperatures (below approximately 593°C).
Incoloy 800H (High-Temperature Enhanced):​ Features a slightly adjusted composition (controlled carbon, large grain size) that significantly improves high-temperature creep rupture strength. Designed for high-temperature load-bearing scenarios (approximately 593–982°C), with tensile and yield strengths notably superior to base grade 800.
Inconel 600 (Corrosion Resistance Veteran):​ Resists chloride ion stress corrosion, alkalis, and high-temperature pure water. However, its high-temperature strength and oxidation resistance (especially above 1000°C) are inferior to Alloy 601.
Alloy 601 (Oxidation Resistance King):​ Contains a key addition of aluminum (Al), forming an extremely dense oxide film. Offers exceptional resistance to extreme high-temperature oxidation (can withstand up to 1150°C long-term), along with resistance to carburization and sulfidation.
Primary Application Industries
Incoloy 800/800H:​ Mainly used in petrochemicals, power generation, and heat treatment furnaces. Specific applications include heat exchangers, petrochemical furnace tubes, steam/hydrocarbon reforming components. In particular, 800H is used for structural parts requiring creep resistance, furnace supports, etc.
Alloy 600:​ Classic uses in the nuclear industry, chemical processing, and food processing. Commonly used for furnace retorts, chemical containers, nuclear engineering components, and also in situations requiring resistance to stress corrosion.
Alloy 601:​ The absolute champion for industrial furnaces and heat treatment equipment. Specializes in high-temperature applications such as muffle furnaces, radiant tubes, furnace rollers, material baskets, as well as gas turbine and petrochemical furnace hangers.
Summary:​ Alloy 600 is the "veteran of corrosion resistance," 800/800H are the "petrochemical high-temperature load-bearing" contenders, and Alloy 601 is the "champion of ultra-high temperature oxidation resistance." The key to material selection lies in whether your equipment prioritizes resistance to high-temperature oxidation, high-temperature creep, or specific media corrosion.
Core Property Comparison
Incoloy 800 (Base Grade):​ Resists high-temperature corrosion (oxidation/carburization), but has the weakest high-temperature strength among the 800 series. Primarily used for load-bearing applications at medium to low temperatures (below approximately 593°C).
Incoloy 800H (High-Temperature Enhanced):​ Features a slightly adjusted composition (controlled carbon, large grain size) that significantly improves high-temperature creep rupture strength. Designed for high-temperature load-bearing scenarios (approximately 593–982°C), with tensile and yield strengths notably superior to base grade 800.
Alloy 600 (Corrosion Resistance Veteran):​ Resists chloride ion stress corrosion, alkalis, and high-temperature pure water. However, its high-temperature strength and oxidation resistance (especially above 1000°C) are inferior to Alloy 601.
Alloy 601 (Oxidation Resistance King):​ Contains a key addition of aluminum (Al), forming an extremely dense oxide film. Offers exceptional resistance to extreme high-temperature oxidation (can withstand up to 1150°C long-term), along with resistance to carburization and sulfidation.
Primary Application Industries
Incoloy 800/800H:​ Mainly used in petrochemicals, power generation, and heat treatment furnaces. Specific applications include heat exchangers, petrochemical furnace tubes, steam/hydrocarbon reforming components. In particular, 800H is used for structural parts requiring creep resistance, furnace supports, etc.
Alloy 600:​ Classic uses in the nuclear industry, chemical processing, and food processing. Commonly used for furnace retorts, chemical containers, nuclear engineering components, and also in situations requiring resistance to stress corrosion.
Alloy 601:​ The absolute champion for industrial furnaces and heat treatment equipment. Specializes in high-temperature applications such as muffle furnaces, radiant tubes, furnace rollers, material baskets, as well as gas turbine and petrochemical furnace hangers.
Summary:​ Alloy 600 is the "veteran of corrosion resistance," 800/800H are the "petrochemical high-temperature load-bearing" contenders, and Alloy 601 is the "champion of ultra-high temperature oxidation resistance." The key to material selection lies in whether your equipment prioritizes resistance to high-temperature oxidation, high-temperature creep, or specific media corrosion.

Packaging​

FAQ
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