Alloy 800HT UNS N08811: Properties, Applications, and Performance Guide
Alloy 800HT UNS N08811 is a nickel-iron-chromium superalloy known for its exceptional strength and resistance to oxidation and carburization at high temperatures. This versatile material is widely used in demanding industrial applications where reliability and durability are critical.
Key Properties of Alloy 800HT
Alloy 800HT offers outstanding mechanical properties, including high tensile and creep rupture strength. Its composition is carefully controlled to ensure optimal performance in extreme environments. The alloy maintains structural integrity even under prolonged exposure to temperatures up to 1500°F (816°C).
One of the standout features is its excellent resistance to oxidation and carburization. This makes it ideal for use in furnace components, heat-treating equipment, and petrochemical processing systems. The material also demonstrates good fabricability, allowing for easy welding and forming.
Common Applications
This superalloy finds extensive use across multiple industries. In the chemical and petrochemical sectors, it’s employed in reformer furnaces, heat exchangers, and radiant tubes. The nuclear industry utilizes Alloy 800HT for steam generator tubing and core components.
Aerospace applications include turbine components and exhaust systems, while industrial heating systems benefit from its use in radiant tubes and furnace muffles. The material’s consistent performance makes it a preferred choice for critical high-temperature applications.
Performance in Extreme Conditions
Alloy 800HT maintains its mechanical properties even after long-term exposure to high temperatures. The material’s controlled carbon content and titanium/aluminum ratio ensure stable microstructural characteristics. This results in reliable performance throughout the component’s service life.
The alloy’s corrosion resistance extends to various environments, including those containing sulfur compounds and other corrosive elements. This comprehensive protection makes it suitable for challenging industrial settings where other materials might fail.
Frequently Asked Questions
What distinguishes Alloy 800HT from similar materials?
The enhanced high-temperature strength and controlled chemical composition set it apart, particularly its optimized titanium and aluminum content for improved creep rupture properties.
Can Alloy 800HT be welded easily?
Yes, it demonstrates good weldability using common techniques like gas tungsten arc welding and shielded metal arc welding with matching filler metals.
What temperature range is ideal for Alloy 800HT?
The alloy performs optimally in temperatures ranging from 1100°F to 1800°F (593°C to 982°C), making it suitable for most high-temperature industrial applications.
Get Started with Alloy 800HT
Ready to incorporate this high-performance material into your projects? Learn more about Alloy 800HT UNS N08811 and discover how it can enhance your application’s performance and longevity. Contact our experts today for technical specifications and pricing information.
For immediate assistance with material selection or to request a quote, visit our product page or call our technical support team. We’re here to help you achieve optimal results with this exceptional superalloy.
