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Nickel Alloy 276, designated as UNS N10276, is a high-performance nickel-based alloy renowned for its outstanding corrosion resistance, exceptional mechanical properties, and versatility in various industrial applications. Its unique combination of nickel, chromium, and molybdenum makes it a preferred choice in industries such as chemical processing, oil and gas, aerospace, and marine environments. This product is particularly effective under severe service conditions, making it suitable for use in environments with extreme temperatures ranging from -20°F to +100°F.

Physical Properties

Mechanical Strength

Nickel Alloy 276 exhibits superior tensile and yield strength under an annealed condition at varying temperatures. According to industry standards, its measured properties are as follows:

• Tensile Strength: 100,000 psi (690 MPa)
• Yield Strength: 41,000 psi (283 MPa)
• Elongation in 2 in. (min.): 40%

These mechanical properties are vital, as they ensure that components made from Alloy 276 maintain their integrity and performance under stressful conditions, significantly reducing the risk of failure.

Hardness and Elasticity

In terms of hardness, Nickel Alloy 276 provides excellent resistance to wear while maintaining structural integrity. Its modulus of elasticity is recorded at 29.8 x 10^6 psi, indicating that the alloy is both stiff and capable of undergoing deformation without fracturing.

Thermal Properties

Thermal properties significantly factor into the selection of materials for high-temperature applications. Nickel Alloy 276 has a mean coefficient of thermal expansion of 6.8 (IN./IN./°F x 10^-6) and a thermal conductivity value of 67.9 BTU-in/ft²-h-°F. These properties enable the alloy to retain performance under thermal cycles and help in assessing the suitability for applications involving heat transfer.

Chemical Composition

The robust performance of Nickel Alloy 276 stems from its carefully balanced chemical composition:

• Nickel (Ni): Bal.
• Chromium (Cr): 14.5 – 16.5%
• Iron (Fe): 4.0 – 7.0%
• Molybdenum (Mo): 15.0 – 17.0%
• Cobalt (Co): Max. 2.5%
• Tungsten (W): 3.0 – 4.5%
• Carbon (C): Max. 0.010%
• Sulphur (S): Max. 0.03%
• Phosphorous (P): Max. 0.04%

This composition ensures remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking in harsh environments, where other materials may fail.

Industry Standards Compliance

Nickel Alloy 276 is produced in accordance with prominent industry specifications such as ASTM B619 and ASTM B626. These standards ensure the material's quality, reliability, and performance across various applications. The specifications outline parameters for tensile strength, corrosion resistance, and mechanical properties, ensuring the alloy meets rigorous industrial demands.

Applications

The versatility of Nickel Alloy 276 allows it to be utilized in several applications, including:

• Chemical Processing: Its resistance to aggressive chemicals makes it a preferred material for reactors, heat exchangers, and piping systems.
• Oil and Gas: Used extensively in subsea and downhole equipment due to its reliability under extreme pressure and temperature variations.
• Aerospace: Ideal for components that require high strength-to-weight ratios alongside excellent corrosion resistance.
• Marine Environments: Its ability to withstand saline environments makes it suitable for offshore applications and boating equipment.

Conclusion

Nickel Alloy 276 is a premier choice for industries requiring materials that offer exceptional strength, corrosion resistance, and versatility in various temperatures. With compliance to strict industry standards and a robust chemical composition, this alloy serves as a reliable solution for critical applications in demanding environments. Whether for new projects or component replacements, Nickel Alloy 276 demonstrates unmatched performance and longevity, securing its place as an essential material in modern engineering and manufacturing.

For inquiries or to discuss specific applications of Nickel Alloy 276, please contact us for expert guidance and assistance in material selection tailored to your unique needs.