INCONEL 660, also known as A-286 or UNS S66826, is a high-strength, age-hardenable iron-nickel-chromium alloy. It is recognized under ASTM A453, AMS 5731, and BS HR 660, ensuring compliance with international standards for quality and performance.

INCONEL 660 is designed for applications that require high strength and oxidation resistance at elevated temperatures. Its unique composition allows it to perform well in both high-temperature and corrosive environments.

Inconel 660 Sheet | Plate

INCONEL 660 sheets and plates are available in various thicknesses and dimensions. These materials are used in applications where high strength and resistance to thermal stress are required, such as in aerospace and industrial settings.

Inconel 660 Round Bar | Rod

INCONEL 660 round bars and rods come in different diameters and lengths. These products are essential for precision machining and manufacturing components that need to withstand high stresses and temperatures.

Inconel 660 Strip | Coil

Available in strips and coils, INCONEL 660 is suitable for applications requiring flexible, high-strength materials. These forms are commonly used for gaskets, seals, and other components that need to perform reliably in demanding conditions.

Inconel 660 Applications

• INCONEL 660 is used in aerospace applications for turbine blades, exhaust systems, and other components where high strength and resistance to high temperatures are crucial.

Inconel 660 Properties

• Tensile Strength: INCONEL 660 exhibits high tensile strength, making it ideal for components subjected to significant mechanical stress at elevated temperatures.
• Density: Approximately 8.1 g/cm³, offering 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 provides excellent resistance to oxidation and scaling at high temperatures, extending the lifespan of components.
• Corrosion Resistance: INCONEL 660 has good resistance to a wide range of corrosive environments, including acidic and basic conditions.

Machining Inconel 660

• Cutting: INCONEL 660 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 660. Proper cooling and lubrication are essential to maintain tool life and ensure accurate drilling.
• Turning: Carbide inserts are preferred for turning INCONEL 660. 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 660, 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 0.040%
• Manganese (Mn): Max 1.0%
• Silicon (Si): Max 0.50%
• Phosphorus (P): Max 0.020%
• Sulfur (S): Max 0.015%
• Nickel (Ni): Max 25.5%
• Iron (Fe): Max 54.0%
• Chromium (Cr): Max 14.8%
• Titanium (Ti): Max 2.13%
• Molybdenum (Mo): Max 1.30%
• Vanadium (V): Max 0.30%
• Aluminum (Al): Max 0.18%
• Boron (B): Max 0.0060%