Alloy 800HT UNS N08811: Properties, Applications, and Performance Guide
Alloy 800HT UNS N08811 is a nickel-iron-chromium superalloy known for its excellent high-temperature strength and oxidation resistance. This material is widely used in demanding environments such as petrochemical processing, heat treatment equipment, and power generation systems due to its stability and durability under extreme conditions.
Key Properties and Composition
The alloy contains controlled amounts of nickel, chromium, and iron, with additions of titanium and aluminum for enhanced creep rupture strength. It maintains structural integrity at temperatures up to 1500°F (816°C), making it ideal for thermal processing applications.
Industrial Applications
Common uses include furnace components, radiant tubes, and heat exchangers. Its resistance to carburization and oxidation ensures long service life in corrosive atmospheres, reducing maintenance costs in industrial settings.
Performance and Durability
Alloy 800HT offers superior stress rupture properties compared to standard austenitic alloys. It performs reliably under cyclic heating and thermal shock conditions, making it a cost-effective solution for high-temperature engineering projects.
Frequently Asked Questions
What distinguishes Alloy 800HT from other high-temperature alloys?
Its optimized titanium/aluminum ratio provides exceptional creep strength while maintaining fabricability.
Can it withstand sulfur-containing environments?
Yes, the high nickel content offers good resistance to sulfidation attacks.
Is it suitable for nuclear applications?
Yes, it meets nuclear component specifications due to its radiation resistance.
For detailed technical specifications and material certifications, explore our comprehensive resource on Alloy 800HT UNS N08811.
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