Alloy 800 UNS N08800: Properties, Applications, and Performance Guide

Alloy 800 UNS N08800 is a nickel-iron-chromium alloy known for its excellent resistance to oxidation and carburization at high temperatures. This versatile material is widely used across various industries due to its balanced composition and reliable performance in demanding environments.

Key Properties of Alloy 800 UNS N08800

The alloy offers outstanding mechanical strength and stability under extreme conditions. It maintains excellent corrosion resistance, especially in oxidizing atmospheres, and performs well in both high-temperature and cryogenic applications.

High Temperature Performance

Alloy 800 demonstrates remarkable creep rupture strength and retains its structural integrity even after prolonged exposure to temperatures up to 1100°F (593°C). Its nickel content ensures resistance to chloride ion stress-corrosion cracking.

Industrial Applications

This alloy serves critical functions in heat treatment equipment, nuclear reactors, and chemical processing systems. It’s particularly valued in furnace components, heat exchangers, and tubing systems where thermal stability is paramount.

Chemical Processing Uses

In chemical environments, Alloy 800 UNS N08800 provides reliable performance against nitric acid, alkalies, and various organic acids. Its composition makes it suitable for reaction vessels and transfer piping.

Frequently Asked Questions

What makes Alloy 800 different from other nickel alloys?

Its balanced iron-nickel-chromium composition provides unique advantages in both oxidizing and carburizing atmospheres where other alloys might fail.

Can Alloy 800 be welded easily?

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

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