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Incoloy Alloy 832 – Composition, Uses, and Properties

Incoloy 832

Incoloy Alloy 832 is a nickel-iron-chromium alloy with high strength and excellent corrosion resistance. It is designed to provide superior resistance to various media such as nitric acid, sulfuric acid, hydrochloric acid, and more. It’s also known for its good strength at elevated temperatures and excellent thermal stability. In short, Incoloy 832 is a great choice for many applications in the chemical process industry. Let’s take a closer look at what makes this alloy so unique.


Incoloy 832 is composed of iron (Fe), chromium (Cr), nickel (Ni) and a trace amount of molybdenum (Mo). The chemical composition of Incoloy 832 gives it superior corrosion resistance in many different environments. The alloy’s high chromium content provides excellent pitting and crevice corrosion resistance in chloride-bearing environments. Adding molybdenum boosts this alloy’s performance in reducing acids like those found in mineral or organic acids.






38.0 – 46.0


0.05 max


19.5 – 23.5


1.0 max


2.5 – 3.5


0.03 max


1.5 – 3.0


0.5 max


0.6 – 1.2


0.2 max


22.0 min (~33%)

Mechanical Properties

The mechanical properties of Incoloy 832 are another significant benefit of this alloy. It has excellent tensile strength at elevated temperatures, making it a viable option for higher-temperature applications where other alloys cannot withstand the heat. The combination of its good ductility and impact toughness makes it ideal for use in highly corrosive environments where other alloys may fail due to embrittlement or fatigue cracking from cyclic loading conditions.

Tensile (ksi) .2% Yield (ksi)

Physical Properties

In addition to its excellent mechanical properties, Incoloy Alloy 832 has exceptional physical properties that make it an attractive option for specific applications. This alloy has outstanding thermal stability – even when subjected to intermittent exposure to temperatures up to 1300°F – making it well-suited for furnace components that can handle these extreme temperatures without deforming or becoming brittle over time. The material also maintains very low thermal expansion rates even at higher temperatures, ensuring that parts made from this alloy remain dimensionally stable throughout their lifetime. Furthermore, the material exhibits great weldability despite its high chromium content, which can often lead to embrittlement during welding processes if not handled correctly.

Density Melting Range Specific Heat Electrical Resistivity
g/cm3 °C °F J/kg.k Btu/lb. °F µΩ·m
8.14 1370-1400 2500-2550 440 0.105 1130










NC 21 FeDU



NA 16






Nr 2.4858


Incoloy 832 is an alloy widely used in both commercial and industrial applications due to its excellent resistance to various corrosive conditions. It offers great strength when exposed to elevated temperatures, making it particularly useful in high-temperature environments, such as nuclear power plants. Other uses include turbine blades, petrochemical processing components and engine parts in the aerospace industry. Additionally, Incoloy 832 is corrosion-resistant and effective in reducing weight. This makes it ideal for components where size and weight are factors, such as boilers and pressure vessels under stress. Incoloy 832 is a versatile material that proves the test of time in many different applications!

Corrosion Resistance

Incoloy 832 is an iron-nickel-chromium alloy developed to provide superior corrosion resistance and fabricability in contrast to other alloys of similar composition. Its tightly controlled chemistry ensures that some of the most aggressive environments are no match for the alloy’s stability and strength, resisting attack from oxidizing acids and reducing acids, salt solutions, halides, and sulfur compounds with ease. This makes Incoloy 832 an ideal material for processing and storage operations that involve materials or products containing corrosive radicals. In addition, highly corrosive seawater is not a problem as long as Incoloy 832 is properly pickled, giving users an advantage in their maritime workspaces.

Heat Resistance

Incoloy 832 is a nickel-chromium-iron alloy that offers superior resistance to heat, corrosion, and oxidation. In some applications, Incoloy 882 can withstand temperatures in excess of 2100°F (1149°C). It also has excellent properties at both high and low pH levels. In addition, because it contains higher levels of chromium and molybdenum than other austenitic stainless steels, it resists the formation of sulfide corrosion products more effectively. It is thus well suited for critical tubular components used in sour-gas service in the oil and gas industry. Furthermore, its good formability makes Incoloy 832 a popular material choice for a wide range of industrial applications that require high tensile strength and creep resistance.

Heat Treatment

Incoloy 832 is an alloy with increased resistance to oxidation and sulfurization, making it an excellent choice for heat treatment. This material is suitable for continuous furnaces, tempering, vapour deposition, and other thermal operations requiring high creep strength and superior corrosion resistance. Due to its properties, it’s common to see Incoloy 832 in chemical processing, power generation, and paper production. Heat treatment of Incoloy 832 is best done using lower temperatures of between 850C-950C (1562F-1742F). Doing so reduces hardness levels while retaining the mechanical strength that makes this alloy so valued.


Machining Incoloy 832 is a process that requires great care and attention to detail. This austenitic-ferritic stainless steel is commonly used in petrochemical and other high-temperature industrial applications, so it must be cautiously handled. Its properties, such as good corrosion resistance, oxidation resistance, pitting resistance, weldability and formability, make Incoloy 832 an ideal material for many projects. To carve Incoloy 832 into the desired shapes and sizes for successful machining operations, manufacturing professionals should have a superior experience with tapping tools and lathe-cutting techniques. Once the correct tools and methods have been chosen for a particular task, spending time perfecting one’s skills will help improve results when working with this complex alloy.


Incoloy 832 welding requires careful preparation and precision to ensure a high-quality connection. Many industry professionals rely on this alloy’s excellent corrosion resistance and temperature strength in their welding applications. It’s important to use the right protective gear when welding Incoloy 832, such as gloves, goggles, face shields and heavy clothing that covers exposed skin or any bare metal that may become hot enough to cause a burn. To make sure the weld is strong, proper tacking should be done before going ahead with welding. It is also important to monitor the amperage for optimal deposition rates and bead formation. With these simple precautions, welders can have superior results when dealing with Incoloy 832.


In summary, Incoloy 832 is an incredibly versatile nickel-iron-chromium alloy that offers excellent mechanical strength at elevated temperatures, superior corrosion resistance against various media such as mineral acids and organic acids, low thermal expansion rates under extreme heat conditions, and superb weldability that allows for fabrication with minimal risk of embrittlement during the welding process. Therefore, it’s no wonder that Incoloy 832 is one of the most popular chemical processing equipment components! If you’re looking for an alloy with these types of qualities, then look no further than Incoloy 832!

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