Alloy 800HT UNS N08811: Properties, Applications, and Benefits

Alloy 800HT UNS N08811 is a nickel-iron-chromium superalloy known for its exceptional high-temperature strength and oxidation resistance. This material is widely used in demanding environments, making it a top choice for industries requiring durability under extreme conditions.

Key Properties of Alloy 800HT

Alloy 800HT offers excellent creep and rupture strength, maintaining structural integrity at temperatures up to 1500°F (816°C). Its high nickel content provides resistance to oxidation and carburization, while titanium and aluminum additions enhance stability. These properties make it ideal for prolonged high-temperature service.

Industrial Applications

Common uses include furnace components, heat exchangers, and radiant tubes in petrochemical plants. It is also utilized in nuclear reactors and thermal processing equipment due to its reliability under stress and corrosive atmospheres.

Benefits of Choosing Alloy 800HT

Selecting this alloy ensures extended equipment lifespan, reduced maintenance costs, and improved safety in critical operations. Its versatility across various sectors underscores its value as a high-performance material.

Frequently Asked Questions

What distinguishes Alloy 800HT from other superalloys?

Alloy 800HT stands out due to its optimized titanium and aluminum levels, providing superior creep resistance compared to standard alloys.

Can Alloy 800HT be welded easily?

Yes, it exhibits good weldability using common techniques like TIG or MIG, though post-weld heat treatment is recommended for optimal performance.

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