What is the composition of INCOLOY 800?
What is the Composition of INCOLOY 800?
Composition of INCOLOY 800
INCOLOY 800 is a nickel-iron-chromium alloy designed to provide outstanding strength and oxidation resistance at elevated temperatures. Its typical chemical composition is as follows:
Nickel (Ni): 30–35%
Chromium (Cr): 19–23%
Iron (Fe): Balance
Carbon (C): ≤0.10%
Aluminum (Al): 0.15–0.60%
Titanium (Ti): 0.15–0.60%
Manganese (Mn): ≤1.50%
Silicon (Si): ≤1.00%
Sulfur (S): ≤0.015%
This balanced composition makes INCOLOY 800 a material that can resist oxidation, carburization, and high-temperature corrosion while maintaining excellent mechanical properties.
Applications of INCOLOY 800
INCOLOY 800 has carved its place in industries where materials face extreme heat and aggressive environments:
Petrochemical Processing: Used in reformer outlet manifolds, headers, and piping systems exposed to hot gases.
Power Generation: Common in superheater and reheater tubing, as well as heat exchangers.
Furnace Components: Ideal for radiant tubes, muffles, retorts, and other parts subject to high thermal cycling.
Nuclear Industry: Applied in steam generator tubing, core components, and structural parts requiring long-term thermal stability.
Chemical Plants: Handles acidic and corrosive conditions in equipment such as pressure vessels and piping systems.
Its versatility across multiple industries highlights its balance of high-temperature performance and corrosion resistance.
Industry Trends
The demand for high-temperature alloys like INCOLOY 800 continues to rise with industrial modernization. Several key factors drive this trend:
Global Energy Transition: As industries shift to cleaner energy, the need for high-efficiency heat exchangers, reformers, and boilers increases. INCOLOY 800 plays a role in enabling these high-temperature processes.
Chemical Industry Growth: Expanding petrochemical plants in Asia, the Middle East, and North America drive material demand.
Nuclear Applications: The alloy’s resistance to stress corrosion cracking under nuclear conditions positions it as a material of choice for long-term reactor projects.
Durability Focus: Industries prefer alloys with long service life to reduce downtime, repair costs, and safety risks, favoring robust options like INCOLOY 800.
As industries demand greater efficiency, durability, and reliability, INCOLOY 800 continues to see expanded adoption globally.
Comparison Table: INCOLOY 800 vs Other High-Temperature Alloys
| Alloy | Ni (%) | Cr (%) | Fe (%) | Max Service Temp (°C) | Key Strengths |
|---|---|---|---|---|---|
| INCOLOY 800 | 30–35 | 19–23 | Balance | 1100 | Oxidation resistance, structural stability |
| INCONEL 600 | 72 min | 14–17 | 6–10 | 1150 | Excellent oxidation & chloride resistance |
| FeCrAl 0Cr21Al6Nb | — | 20–23 | Balance | 1350 | High-temp oxidation resistance, durability |
| NiCr 80/20 | 75–80 | 20–23 | — | 1200 | High electrical resistivity, heat cycling |
This comparison shows how INCOLOY 800 strikes a balance between nickel-rich alloys (for corrosion resistance) and FeCrAl alloys (for extreme oxidation resistance). It stands out for its structural integrity at intermediate high temperatures, making it ideal for pressure-containing and load-bearing components.
Company Perspective: DLX Alloy’s Approach
At DLX Alloy, we understand that our clients demand more than just standard alloy supply — they require consistent quality, traceability, and technical expertise. Our INCOLOY 800 materials are produced with precise control of alloying elements, ensuring uniform mechanical properties and corrosion resistance across every batch.
We offer custom dimensions, tailored supply formats, and technical consulting for specific project requirements. Whether it’s tubing for a petrochemical plant or furnace components for high-temperature processing, we deliver materials engineered for reliability.
What sets us apart is our ability to combine global-standard compliance with flexible customer solutions, ensuring that industries relying on INCOLOY 800 achieve optimized performance and reduced lifecycle costs.
Outlook for INCOLOY 800
Looking ahead, INCOLOY 800 will remain vital to industries where materials must withstand thermal stress, oxidation, and corrosive atmospheres. As global manufacturing shifts toward energy efficiency and process reliability, the alloy’s ability to perform under prolonged high temperatures positions it as a long-term solution.
DLX Alloy continues to expand its capabilities to support global customers with high-quality INCOLOY 800 products, offering both standard and customized solutions. With our technical expertise and commitment to quality, we ensure that industries relying on this alloy gain a competitive edge in durability and efficiency.
Conclusion
INCOLOY 800 is more than just a material — it is an engineering solution for industries that require long-term reliability under extreme conditions. With its carefully balanced nickel, iron, and chromium composition, it delivers a unique combination of strength, corrosion resistance, and oxidation stability.
As industry demands continue to evolve, DLX Alloy is dedicated to supplying INCOLOY 800 with unmatched consistency, performance, and support, making it an alloy that shapes the future of high-temperature applications worldwide.
