Product Description
INCOLOY 800HT (UNS N08811) is a high-performance nickel-iron-chromium alloy specifically engineered for high-temperature environments. It is a modification of INCOLOY 800H with closely controlled additions of aluminum, titanium, and carbon for enhanced strength and creep resistance. This alloy exhibits excellent resistance to oxidation, carburization, and other forms of high-temperature corrosion, making it an ideal material for applications requiring sustained exposure to extreme temperatures.
Key Properties
- High-Temperature Strength: Exceptional creep and stress-rupture resistance at elevated temperatures, making it ideal for prolonged service conditions.
- Oxidation Resistance: Excellent resistance to oxidation and scaling in environments up to 1,100°C (2,012°F).
- Thermal Stability: Maintains mechanical properties and dimensional stability under high thermal stress.
- Good Corrosion Resistance: Resists attack from carburizing, nitriding, and sulfur-bearing atmospheres.
- Weldability: Easily welded using standard welding methods without significant loss of properties.
Chemical Composition
| Element |
Percentage (%) |
| Nickel (Ni) |
30.0 - 35.0 |
| Chromium (Cr) |
19.0 - 23.0 |
| Iron (Fe) |
Balance |
| Carbon (C) |
0.06 - 0.10 |
| Aluminum (Al) |
0.25 - 0.60 |
| Titanium (Ti) |
0.25 - 0.60 |
| Manganese (Mn) |
1.5 max |
| Silicon (Si) |
1.0 max |
| Copper (Cu) |
0.75 max |
Specifications
- UNS Number: N08811
- Forms: Strip, Coil, Foil, Sheet, Plate, Bar, Wire, Pipe, Tube
- Standards:
- ASTM B409
- ASME SB409
- ISO 9723
Applications
- Chemical Processing: Used in heat exchangers, process piping, and reactors subjected to high temperatures and corrosive environments.
- Petrochemical Industry: Ideal for equipment like reformer tubes and cracker tubes in refineries.
- Power Generation: Utilized in superheater and reheater tubing in fossil fuel and nuclear power plants.
- Industrial Furnaces: Common in furnace components, radiant tubes, and burners where oxidation resistance is critical.
- Heat Treating Equipment: Ideal for trays, baskets, and fixtures exposed to extreme temperatures.
- Nuclear Industry: Suitable for high-temperature reactor components.
Fabrication and Machining
- Welding: Compatible with TIG, MIG, and other common welding methods. Pre- and post-weld heat treatments are advisable for high-stress applications.
- Machining: Due to its strength and work-hardening properties, machining should be performed at reduced speeds with proper lubrication.
- Hot Working: Hot working is performed between 1,150°C and 950°C (2,100°F to 1,750°F) and requires air cooling for optimal results.
- Cold Working: Cold working improves mechanical properties but may require annealing to relieve stresses.
Advantages
- Enhanced creep strength for prolonged high-temperature use.
- Superior resistance to carburization and oxidation.
- Excellent mechanical stability at extreme temperatures.
- Versatile applications in diverse industries.
Detailed Photos
Product application
Factory workshop
Company Profile
Shandong Titanium Nickel Special Steel Co., Ltd., registered funds (one thousand yuan for 10,000 yuan), the company is mainly committed to high -tech enterprises that are integrated with special alloy materials, specializing in the research and sales of special alloys such as nickel -based and iron -based. Products include corrosion-resistant alloys, superalloys, precision alloys, Hastelloy, Monel, INCONEL, INCOLOY, copper-nickel alloys, titanium and titanium alloys, zirconium and zirconium alloys, nickel and nickel-based alloys, nickel-cobalt-based heat-resistant alloys , Hafnium alloy, etc., more than 60 kinds of alloy materials such as special stainless steel. On the basis of stabilizing the quality of the original products, according to the market demand, it solves the quality problems existing in the traditional metallurgical process, and ensures the low miscellaneous and low deflection of the alloy material products, which has won an excellent reputation in the industry.
Packaging & Shipping
FAQ
1. What is INCOLOY?
INCOLOY is a family of nickel-iron-chromium alloys designed for excellent corrosion resistance and high-temperature strength. These alloys are widely used in industries such as chemical processing, power generation, and aerospace due to their durability in extreme environments.
2. What are the key grades of INCOLOY?
- INCOLOY 800: High strength and excellent resistance to oxidation and carburization at elevated temperatures.
- INCOLOY 800H/800HT: Modified versions of 800 with enhanced creep-rupture strength.
- INCOLOY 825: Excellent resistance to acid attack, particularly sulfuric and phosphoric acids.
- INCOLOY 925: High strength and corrosion resistance in sour gas environments.
- INCOLOY 945/945X: Designed for oil and gas applications with superior corrosion resistance.
3. What are the main applications of INCOLOY?
- Chemical and Petrochemical Processing: Heat exchangers, piping systems, and reactors.
- Power Plants: Superheaters, reheaters, and heat recovery systems.
- Oil and Gas: Downhole equipment and sour gas environments.
- Marine: Desalination plants and seawater piping systems.
- Aerospace: Engine components and high-temperature structural parts.
4. How is INCOLOY different from INCONEL?
While both are nickel-based alloys, the key difference lies in their composition and application:
- INCOLOY: Primarily nickel-iron-chromium alloys, ideal for environments requiring resistance to both heat and corrosion.
- INCONEL: Primarily nickel-chromium-based, with superior performance in high-temperature environments.
5. What forms is INCOLOY available in?
- Sheet
- Plate
- Coil
- Strip
- Bar
- Pipe
- Tube
- Fittings and Flanges
6. What industries commonly use INCOLOY?
- Chemical processing
- Oil and gas
- Power generation
- Aerospace
- Marine and desalination
7. Can INCOLOY be welded?
Yes, INCOLOY can be welded using standard welding techniques, such as TIG, MIG, or stick welding. It's recommended to use matching filler materials, and proper pre-weld and post-weld practices should be followed to avoid cracking or corrosion issues.
8. What are the temperature limits for INCOLOY alloys?
Temperature limits vary by grade:
- INCOLOY 800: Up to 1100°F (593°C) for long-term use, higher for short durations.
- INCOLOY 825: Typically up to 1000°F (538°C).
- INCOLOY 800H/800HT: Optimized for use at 1100-1800°F (593-982°C).
9. What is the chemical composition of INCOLOY alloys?
The composition varies by grade, but a typical INCOLOY alloy includes:
- Nickel (30-46%)
- Iron (Balance)
- Chromium (19-30%)
- Small amounts of molybdenum, titanium, aluminum, and other elements, depending on the grade.
10. How can I contact you for more information?
You can contact us through the following methods:
Online support: Visit our website for live chat
Address:
300 Meters North of Liaoniu Road and Xindong Ring Road, Liaocheng High-Tech Zone, Liaocheng, Shandong, China
We look forward to providing you with high-quality products and services!
If you have any other questions, feel free to contact us, and we will do our best to assist you!
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