Alloy 800 UNS N08800: Properties, Applications, and Performance Guide
Alloy 800 UNS N08800 is a nickel-iron-chromium alloy renowned for its excellent resistance to oxidation and carburization at high temperatures. This versatile material is widely used across various demanding industries due to its balanced composition and reliable performance.
Key Properties of Alloy 800 UNS N08800
The alloy offers outstanding mechanical strength and stability even under extreme thermal conditions. Its high nickel content provides resistance to chloride-ion stress-corrosion cracking, while chromium enhances oxidation resistance. These properties make it suitable for prolonged use in aggressive environments.
High-Temperature Performance
Alloy 800 maintains exceptional creep and rupture strength at temperatures up to 1100°F (593°C). This makes it ideal for applications involving thermal cycling and extended exposure to heat.
Industrial Applications
Common uses include heat exchangers, furnace components, and nuclear steam generator tubing. It’s also employed in chemical processing equipment and power generation systems where corrosion resistance is critical.
Chemical Processing Uses
The alloy’s resistance to various corrosive media makes it valuable in chemical reactors, piping systems, and catalyst support grids in petrochemical plants.
Frequently Asked Questions
What is the maximum service temperature for Alloy 800?
The alloy typically performs well up to 1100°F (593°C) in oxidizing environments and up to 1500°F (816°C) in carburizing atmospheres.
How does it compare to other high-temperature alloys?
Alloy 800 offers better carburization resistance than many stainless steels while being more cost-effective than higher-nickel alloys.
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