Alloy 800HT UNS N08811: Properties, Applications, and Performance Guide

Alloy 800HT UNS N08811: Key Properties and Characteristics

Alloy 800HT UNS N08811 is a nickel-iron-chromium superalloy known for its high strength and excellent resistance to oxidation and carburization. It operates effectively in temperatures up to 1500°F (816°C), making it ideal for demanding environments. The alloy’s controlled carbon content and titanium/aluminum ratios ensure superior creep and rupture properties.

High-Temperature Performance and Microstructure

This material excels in high-stress applications due to its stable austenitic structure. Its ability to resist thermal fatigue and corrosion makes it a top choice for heat treatment fixtures and industrial heating systems.

Common Applications of Alloy 800HT

Industries such as chemical processing, power generation, and aerospace rely on Alloy 800HT UNS N08811 for critical components. It is widely used in furnace parts, heat exchangers, and radiant tubes.

Industrial Use Cases and Material Benefits

Its versatility extends to nuclear reactors and petrochemical equipment, where durability under thermal cycling is essential. The alloy maintains structural integrity even after prolonged exposure to aggressive media.

Frequently Asked Questions

What distinguishes Alloy 800HT from other superalloys?

Alloy 800HT offers enhanced creep rupture life and higher allowable stresses compared to standard 800 series alloys, thanks to its optimized composition.

Can Alloy 800HT withstand sulfur-rich environments?

Yes, it demonstrates good resistance to sulfidation and oxidation, making it suitable for refinery applications.

Optimize Your Projects with Premium Materials

For reliable performance in extreme conditions, consider integrating Alloy 800HT UNS N08811 into your designs. Explore our comprehensive guide to leverage its full potential.

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