Product Description
INCOLOY 800HT (UNS N08811) is a high-temperature nickel-iron-chromium alloy designed for excellent strength and resistance to oxidation, carburization, and sulfidation at elevated temperatures. It is an advanced modification of INCOLOY 800 and 800H, with controlled additions of aluminum and titanium to enhance its high-temperature properties. INCOLOY 800HT is widely used in environments requiring superior creep and stress rupture resistance.
Key Features
- High-Temperature Strength: Excellent creep and rupture strength at temperatures up to 870°C (1600°F).
- Oxidation and Carburization Resistance: Superior resistance to oxidation and carburization in high-temperature environments.
- Good Structural Stability: Retains mechanical properties and dimensional stability over prolonged exposure to heat.
- Corrosion Resistance: Outstanding resistance to corrosion in various acidic and oxidizing environments.
- Versatile Applications: Suitable for use in thermal, chemical, and petrochemical industries.
Chemical Composition (Typical)
| 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 |
| Sulfur (S) |
0.015% max |
| Copper (Cu) |
0.75% max |
Mechanical Properties (Typical at Room Temperature)
| Property |
Value |
| Tensile Strength |
75 ksi (515 MPa) min |
| Yield Strength (0.2%) |
30 ksi (205 MPa) min |
| Elongation |
35% min |
| Hardness |
92 HRB max |
Applications
- Chemical Processing: Heat exchangers, process piping, and pressure vessels for handling acidic and oxidizing media.
- Petrochemical Industry: Furnace components, reformer tubes, and catalyst supports.
- Power Plants: Superheaters, reheaters, and headers in power generation systems.
- Industrial Heating: Equipment used in high-temperature environments, such as annealing and heat-treating furnaces
Standards and Specifications
- UNS: N08811
- ASTM: B409, B407, B408
- ASME: SB409, SB407, SB408
- EN: 1.4959, 1.4876
Corrosion and Oxidation Resistance
- Oxidizing Environments: Excellent resistance to oxidation at high temperatures.
- Carburization Resistance: Performs well in carburizing atmospheres.
- Acidic Media: Good resistance to sulfuric acid and phosphoric acid.
- Stress Corrosion Cracking: Resistant to chloride-induced stress corrosion cracking.
Heat Treatment
- Solution annealed at 1148-1177°C (2100-2150°F), followed by rapid cooling.
- Designed for long-term operation in high-temperature environments without loss of mechanical properties.
Advantages
- Superior performance in extreme temperature and corrosive conditions.
- High structural stability for long-term use.
- Excellent weldability and fabrication characteristics.
Key Industries
- Chemical Processing
- Petrochemical
- Power Generation
- Industrial Furnaces
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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