What is the difference between Inconel and incoloy 800?

What is the difference between Inconel and incoloy 800?

What is the difference between Inconel 800 and Incoloy 800?
Inconel and Incoloy are alloys belonging to the same family of high-temperature alloys, often referred to as high-performance alloys. In addition to their high resistance to all forms of corrosion, both superalloys also exhibit excellent resistance to oxidation. Both superalloys exhibit very high mechanical strength at elevated temperatures. The combination of these factors makes these two alloys high-performance types. Since they belong to the same family, their properties are similar, but differences in their composition set them apart. The most critical difference between Inconel 800 and Incoloy 800 is their ingredients. Inconel 800 is an alloy whose chemical composition consists primarily of nickel and chromium. Typically, the alloy's chemistry contains more than 50% nickel. Incoloy 800, on the other hand, is an alloy whose main components are nickel, iron, and chromium. This particular alloy differs from the former in that its chemical composition contains less than 50% nickel. Besides chemical composition, other differences between these two alloys lie in their use in specific applications or industries.

Inconel 800 and Incoloy 800

Incoloy 800 is an alloy with a higher iron content. The cost of Inconel 800 becomes lower due to the alloy's higher iron content and lower nickel content. Since it is an economical option, this alloy is considered an ideal material for applications involving high temperatures. Although used at high temperatures, applications using this alloy tend to be less critical. The alloy is relatively easy to manufacture. Therefore, manufacturers can use the same machines and processing techniques associated with stainless steel alloy processing. The point of this alloy is that it is more resistant to aggressive corrosion. In particular, Incoloy 800 shows very high resistance to corrosive compounds in aqueous environments. Its chemical composition contains chromium and nickel, making it resistant to chemical and environmental corrosion. The alloy also exhibits resistance to physical deterioration such as - surface pitting and cracking. Incoloy 800 is a popular choice in the oil and gas industry because it can withstand sour gas and high chloride environments. The alloy has excellent resistance to seawater and salt water, making it ideal for marine applications. Incoloy 800 is also used in wet scrubbing, furnace reactive atmospheres and nuclear fuel industries.

Inconel 800 has a chemical composition of over 50% nickel and is known to be more expensive than the former. Nickel is an expensive commodity, which is why using nickel in alloys increases their cost. When heated, Inconel 800 forms a thick and stable oxide layer. This thick layer is known to protect the outer surfaces of Inconel 800 components from further attack. This phenomenon is why the manufacturer recommends the use of Inconel 800 in extreme temperature and high pressure applications. Under such extreme conditions, metals or alloys such as steel and aluminum can undergo thermal creep. In addition to its use in heat treating components, typical applications for Inconel 800 include the food and beverage industry. Due to its high strength and stiffness properties, Inconel 800 is an alloy well suited for demanding applications including the marine engineering, aerospace and chemical processing industries.

Inconel 800 (UNS N08800) Chemical Composition

Composition, %

Incoloy Alloy 800H (UNS N08810) Chemical Composition

Composition, %

Incoloy Alloy 800HT (UNS N08811) Chemical Composition

Composition, %