N08825/Incoloy Alloy 825/NS142/NiCr21Mo/2.4858/NCF 825 Incoloy Alloy Bolt For Food Processing and Pharmaceuticals

Incoloy 825 (N08825/NS142/NiCr21Mo/2.4858/NCF 825) is a nickel-iron-chromium alloy with excellent corrosion resistance in harsh environments. These bolts offer superior resistance to pitting, crevice corrosion, and stress corrosion cracking, making them ideal for chemical processing, marine, and nuclear applications. With added molybdenum, copper, and titanium, they maintain strength in acidic and oxidizing conditions. Incoloy 825 bolts perform well in temperatures up to 540°C (1000°F) while retaining mechanical integrity. They conform to ASTM B425 and related standards, ensuring high reliability in extreme conditions. These fasteners are commonly used in heat exchangers, piping systems, and offshore structures, providing long-term durability and performance in aggressive environments.

Trade Code

Incoloy 825 (N08825, NS142, NiCr21Mo, 2.4858, NCF 825) is a corrosion-resistant nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium. Bolts made from Incoloy 825 are widely used in harsh environments due to their exceptional corrosion resistance and mechanical strength.

Key Features of Incoloy 825 Bolts

• Excellent Corrosion Resistance

Superior resistance to oxidizing and reducing acids, such as sulfuric and phosphoric acid.

Highly resistant to stress corrosion cracking (SCC) and pitting in chloride environments.

Great performance in seawater and brine applications.

• High-Temperature Strength

Maintains mechanical properties in temperatures up to 540°C (1000°F).

Suitable for use in heat exchangers, power plants, and high-temperature chemical processes.

• Outstanding Mechanical Properties

High tensile strength and toughness, making it ideal for critical fastening applications.

Good fatigue and creep resistance under thermal cycling conditions.

• Excellent Weldability & Fabrication

Can be welded using standard techniques such as TIG, MIG, and resistance welding.

Easily machined and formed into complex bolt designs.

• Resistant to Sulfuric & Phosphoric Acid

Performs well in acid processing industries, including chemical plants and refinery applications.

Incoloy 825 (N08825, 2.4858, NiCr21Mo) is a nickel-iron-chromium alloy with significant additions of molybdenum, copper, and titanium. It offers excellent resistance to corrosion, including pitting, crevice corrosion, and stress corrosion cracking, making it ideal for harsh environments.

Applications of Incoloy 825 Bolts

Due to its high corrosion resistance and strength, Incoloy 825 bolts are commonly used in the following industries:

1. Chemical Processing

• Heat exchangers
• Acid production plants (e.g., sulfuric and phosphoric acid)
• Storage and transportation of corrosive chemicals

2. Marine and Offshore Engineering

• Seawater cooling systems
• Subsea equipment and pipelines
• Heat exchangers in offshore platforms

3. Power Generation

• Nuclear fuel reprocessing
• Waste treatment equipment
• Heat exchangers and condensers

4. Oil & Gas Industry

• Downhole tubular components
• Gas scrubbing systems
• Sour gas (H₂S) and high-chloride environments

5. Aerospace & Defense

• High-performance fasteners for extreme environments
• Components exposed to oxidizing and reducing conditions

6. Pollution Control & Waste Treatment

• Scrubbers for flue gas desulfurization
• Industrial waste treatment plants