INCONEL 718, also known as UNS N07718 or AMS 5662, is a high-strength nickel-chromium-based superalloy that offers excellent mechanical properties at elevated temperatures. It is recognized under ASM B637, BS HR 329, and NC1FE, ensuring adherence to international standards.

INCONEL 718 is specifically designed for applications requiring high strength, resistance to thermal fatigue, and oxidation resistance. Its unique composition provides excellent performance in harsh environments, including aerospace and industrial applications.

Inconel 718 Sheet | Plate

INCONEL 718 sheets and plates come in a range of thicknesses and dimensions. These materials are essential for high-temperature applications such as turbine blades, engine components, and structural parts in aerospace and power generation.

Inconel 718 Round Bar | Rod

INCONEL 718 round bars and rods are available in various diameters and lengths. These products are crucial for precision machining and manufacturing components that must withstand significant mechanical stresses and high temperatures.

Inconel 718 Strip | Coil

Available in strips and coils, INCONEL 718 is suitable for applications requiring flexible and high-strength materials. These forms are commonly used for making gaskets, seals, and other components that must perform reliably in extreme conditions.

Inconel 718 Applications

• INCONEL 718 is extensively used in aerospace applications, including turbine engines, structural components, and exhaust systems due to its high strength.

Inconel 718 Properties

• Tensile Strength: INCONEL 718 exhibits high tensile strength, making it suitable for components subjected to significant mechanical stress at elevated temperatures.
• Density: Approximately 8.2 g/cm³, providing a favorable strength-to-weight ratio for demanding applications.
• Thermal Conductivity: Moderate thermal conductivity ensures stability and performance under high-temperature conditions.
• Oxidation Resistance: The alloy offers excellent resistance to oxidation and scaling at high temperatures, extending the lifespan of components.
• Corrosion Resistance: INCONEL 718 has superior resistance to a wide range of corrosive environments, including acidic and basic conditions.

Machining Inconel 718

• Cutting: INCONEL 718 can be cut using high-speed steel or carbide tools. Techniques such as water jet cutting or laser cutting are recommended for precision work.
• Drilling: Utilize carbide or cobalt drills for drilling INCONEL 718. Proper cooling and lubrication are essential to maintain tool life and ensure accurate drilling.
• Turning: Carbide inserts are preferred for turning INCONEL 718. Consistent cutting speeds and high-pressure cooling are crucial for achieving optimal results.
• Milling: Milling operations should use carbide end mills with adequate cooling to manage heat and maintain precision during processing.
• Grinding: For grinding INCONEL 718, use diamond or CBN wheels to achieve precise tolerances and a high-quality surface finish. Adequate cooling is necessary to prevent overheating and maintain dimensional accuracy.

Chemical Composition

• Carbon (C): Max 0.08%
• Manganese (Mn): Max 0.35%
• Silicon (Si): Max 0.35%
• Phosphorus (P): Max 0.015%
• Sulfur (S): Max 0.015%
• Nickel (Ni): Min 50.0%, Max 55.0%
• Molybdenum (Mo): Min 2.80%, Max 3.30%
• Chromium (Cr): Min 17.0%, Max 21.0%
• Titanium (Ti): Min 0.65%, Max 1.15%
• Aluminum (Al): Min 0.20%, Max 0.80%
• Cobalt (Co): Max 1.00%
• Boron (B): Max 0.006%
• Copper (Cu): Max 0.30%
• Iron (Fe): Balance