Product Description
INCOLOY 825 (UNS N08825) is a corrosion-resistant nickel-iron-chromium alloy designed for a wide range of applications that require resistance to both reducing and oxidizing environments. It combines excellent resistance to corrosion, stress corrosion cracking, pitting, and crevice corrosion, making it suitable for environments such as chemical processing, oil and gas, and pollution control. INCOLOY 825 is commonly used in environments with high concentrations of sulfuric acid, phosphoric acid, and other industrial chemicals.
Key Features
- Excellent Corrosion Resistance: Superior resistance to a wide variety of corrosive environments, including reducing and oxidizing acids, stress corrosion cracking, and pitting.
- High Temperature Strength: Retains good mechanical strength and oxidation resistance at higher temperatures up to 1020°F (550°C).
- Good Weldability: Easily weldable using a variety of techniques, making it suitable for both welded and heat-treated components.
- High Resistance to Acidic Media: Excellent resistance to sulfuric acid, phosphoric acid, and other acidic compounds.
Chemical Composition (Typical)
| Element |
Percentage |
| Nickel (Ni) |
38.0 - 46.0% |
| Chromium (Cr) |
19.5 - 23.5% |
| Iron (Fe) |
Balance |
| Molybdenum (Mo) |
2.5 - 3.5% |
| Copper (Cu) |
1.0 - 3.0% |
| Titanium (Ti) |
0.6 - 1.2% |
| Aluminum (Al) |
0.2% max |
| Silicon (Si) |
0.5% max |
| Carbon (C) |
0.05% max |
| Manganese (Mn) |
1.0% max |
| Sulfur (S) |
0.02% max |
Mechanical Properties (Typical at Room Temperature)
| Property |
Value |
| Tensile Strength |
80 ksi (550 MPa) min |
| Yield Strength (0.2%) |
30 ksi (205 MPa) min |
| Elongation |
40% min |
| Hardness |
95 HRB max |
Applications
- Chemical Processing: Equipment for handling acids, solvents, and corrosive chemicals in chemical plants and refineries.
- Oil and Gas: Components exposed to sour gas, brine, and other harsh environments.
- Pollution Control: Employed in flue gas desulfurization systems, waste treatment, and other industrial applications.
- Marine: Equipment subjected to seawater exposure, including heat exchangers and piping systems
Standards and Specifications
- UNS: N08825
- ASTM: B424, B366, B564
- ASME: SB424, SB366, SB564
- EN: 2.4858
Corrosion and Oxidation Resistance
- Sulfuric Acid: Excellent resistance to concentrated sulfuric acid.
- Phosphoric Acid: High resistance to both phosphoric and sulfuric acids.
- Pitting and Crevice Corrosion: Resistant to pitting and crevice corrosion in both natural and industrial environments.
- Stress Corrosion Cracking: Exceptional resistance to stress corrosion cracking, especially in chlorides and other industrial chemicals.
- Oxidizing Environments: Good resistance to oxidation at high temperatures up to 1020°F (550°C).
Heat Treatment
- Annealing: Solution annealed at 1850-2000°F (1010-1093°C) followed by rapid cooling.
- Work Hardening: Not work-hardenable due to the alloy's chemical composition, but maintains strength through alloying.
Advantages
- Excellent resistance to a wide range of aggressive environments.
- Superior weldability and fabricability.
- Versatile in applications across various industries, including chemical, marine, and pollution control.
- High-temperature resistance while retaining mechanical properties.
Key Industries
- Chemical Processing
- Oil and Gas
- Pollution Control
- Marine Applications
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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