Alloy 800 UNS N08800: Properties, Applications, and Benefits

Alloy 800 UNS N08800 is a nickel-iron-chromium superalloy known for its excellent resistance to oxidation and carburization at high temperatures. This material maintains strength and stability in extreme environments, making it a top choice for demanding industrial applications.

Key Mechanical and Chemical Properties

The alloy offers high tensile strength and good creep rupture properties, especially under thermal cycling conditions. Its composition includes approximately 32% nickel, 21% chromium, and balanced iron, providing superior corrosion resistance in various aggressive media.

Industrial Applications of Alloy 800

Common uses include heat exchangers, furnace components, and nuclear reactor systems. Its ability to withstand sulfur-containing atmospheres and steam makes it ideal for petrochemical processing and power generation equipment.

Advantages Over Alternative Materials

Compared to standard stainless steels, Alloy 800 UNS N08800 demonstrates better performance in cyclic oxidation environments and higher temperature capabilities. Its balanced composition prevents embrittlement during prolonged high-temperature exposure.

Frequently Asked Questions

What is the maximum service temperature for Alloy 800?

The alloy performs reliably at temperatures up to 1100°C in oxidizing atmospheres and 540°C in reducing conditions.

Can Alloy 800 be welded?

Yes, it exhibits good weldability using common techniques like TIG and MIG welding with matching filler metals.

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