Inconel Alloy 718/UNS N07718/2.4668/NiCr19Fe19Nb5Mo3 Nut With Good Fabricability For Aerospace

Inconel 718 (GH4169/UNS N07718/2.4668/NiCr19Fe19Nb5Mo3) nuts are high-strength, corrosion-resistant fasteners designed for extreme environments. Made from a nickel-based superalloy, they exhibit excellent resistance to oxidation, creep, and stress corrosion cracking, especially in high-temperature (up to 700°C) and cryogenic conditions. Their composition includes nickel, chromium, iron, niobium, molybdenum, and titanium, ensuring outstanding mechanical properties and weldability. These nuts are widely used in aerospace, gas turbines, nuclear reactors, marine, and chemical processing industries. They retain strength and stability under high loads and harsh conditions, making them ideal for critical applications. Inconel 718 nuts meet various standards, such as ASTM B637 and AMS 5662/5663, ensuring reliability and performance in demanding engineering applications.

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Inconel 718 (GH4169/UNS N07718/2.4668/NiCr19Fe19Nb5Mo3) nuts are high-performance fasteners known for their exceptional strength, corrosion resistance, and high-temperature stability.

Key Features:

1. High Strength & Toughness

• Precipitation-hardened nickel-based superalloy with excellent mechanical properties.
• Yield strength of ~1035 MPa and tensile strength of ~1375 MPa after heat treatment.
• Maintains strength at temperatures up to 700°C (1292°F).

2. Excellent Corrosion & Oxidation Resistance

• Resistant to oxidation and corrosion in harsh environments, including aerospace and marine applications.
• Performs well in acidic and chloride-containing environments, preventing stress corrosion cracking.

3. High-Temperature Performance

• Withstands extreme temperatures from cryogenic levels up to ~700°C without significant degradation.
• Suitable for aerospace, power plants, and gas turbines.

4. Creep & Fatigue Resistance

• High resistance to creep deformation under long-term stress at elevated temperatures.
• Excellent fatigue strength makes it ideal for cyclic loading applications.

5. Non-Magnetic & Good Machinability

• In solution-annealed conditions, it is non-magnetic.
• Can be machined using standard nickel alloy techniques, though work hardening requires proper tooling.

Inconel 718 (GH4169, UNS N07718, 2.4668, NiCr19Fe19Nb5Mo3) nuts are widely used in industries requiring high strength, corrosion resistance, and excellent performance in extreme environments.

Here are some of their main applications:

1. Aerospace & Aviation

• Used in jet engines, gas turbines, and aerospace fasteners due to their ability to withstand high temperatures (up to 700°C) and resist oxidation and creep.
• Critical components in aircraft engines, exhaust systems, and structural assemblies that require high tensile strength and resistance to thermal cycling.

2. Power Generation

• Used in gas turbines, steam turbines, and nuclear power plants, where they secure components in high-pressure, high-temperature environments.
• Essential for heat exchangers, combustion chambers, and turbine casings due to their superior corrosion resistance.

3. Oil & Gas Industry

• Found in downhole equipment, subsea components, and offshore drilling platforms, where resistance to high pressure, corrosion, and sulfide stress cracking (SSC) is crucial.
• Commonly used in valves, flanges, and heat-resistant fasteners for extreme conditions.

4. Chemical Processing & Petrochemical Industry

• Used in reactors, heat exchangers, pressure vessels, and piping systems that handle corrosive chemicals at high temperatures.
• Ideal for acidic and high-sulfur environments, such as processing plants dealing with nitric acid, hydrochloric acid, and sulfuric acid.

5. Automotive & Motorsport

• Used in high-performance engine components, turbochargers, and exhaust systems, particularly in racing and extreme-duty vehicles.
• Ideal for high-temperature and vibration-resistant fasteners in high-performance applications.

6. Marine & Naval Applications

• Used in submarines, naval vessels, and offshore structures, where resistance to seawater corrosion and biofouling is required.
• Suitable for high-stress bolted connections in shipbuilding and deep-sea exploration.

7. Medical & Biomedical Equipment

• Used in surgical instruments, orthopedic implants, and prosthetics, where biocompatibility, strength, and corrosion resistance are essential.
• Found in high-strength fasteners and mechanical assemblies for medical devices.

Why Use Inconel 718 Nuts?

• High-temperature strength (maintains mechanical properties up to 700°C).
• Excellent oxidation and corrosion resistance (ideal for harsh chemical and marine environments).
• Superior fatigue and creep resistance (prolongs service life in high-stress conditions).
• Good weldability and machinability (better than some other superalloys).