Alloy 800 UNS N08800: Properties, Applications, and Performance

Alloy 800 UNS N08800 is a nickel-iron-chromium superalloy renowned for its exceptional resistance to oxidation and carburization at elevated temperatures. This versatile material is widely used across industries requiring durability and reliability under extreme conditions.

Key Properties of Alloy 800 UNS N08800

This alloy offers excellent mechanical strength and stability from room temperature up to 1300°F (704°C). Its high nickel content provides resistance to chloride-ion stress-corrosion cracking, while chromium enhances oxidation resistance.

High-Temperature Performance

Alloy 800 maintains structural integrity and corrosion resistance in continuous service at temperatures up to 1100°F (593°C), making it ideal for heat treatment applications.

Industrial Applications

The material’s unique properties make it suitable for furnace components, heat exchanger tubing, nuclear steam generator tubing, and chemical processing equipment. Its carburization resistance makes it particularly valuable in petrochemical industries.

Nuclear Industry Usage

Alloy 800 is specified for nuclear steam generator tubing due to its excellent corrosion resistance and mechanical properties in high-temperature water environments.

Frequently Asked Questions

What makes Alloy 800 different from other nickel alloys?

Its optimal balance of nickel, chromium, and iron content provides unique resistance to both oxidation and carburization.

Can Alloy 800 be welded?

Yes, it exhibits good weldability using common welding techniques while maintaining corrosion resistance.

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