Home > Products > Metallurgy , Mining & Energy > Metallurgy & Mining > Piping Tubing

Nickel Alloy 20, designated under UNS N08020, is a versatile and highly durable alloy that stands out for its excellent resistance to corrosion, particularly against sulfuric acid and other aggressive environments. This alloy is utilized across various industries, especially in chemical processing, oil and gas, power generation, and pharmaceuticals, where performance reliability is crucial under challenging conditions.

Physical Properties

Nickel Alloy 20 exhibits remarkable physical properties, especially when in the annealed condition. The characteristics of Alloy 20 from -20°F to +100°F include:

• Tensile Strength: 80,000 psi (551 MPa)
• Yield Strength: 35,000 psi (241 MPa)
• Elongation in 2 inches (min.): 30%

These attributes demonstrate the alloy's capacity to withstand significant stress and strain while maintaining structural integrity, affirming its suitability for a wide range of applications.

Composition

The specific composition of Nickel Alloy 20 is critical to its performance and is outlined as follows:

• Nickel (Ni): 32.00–38.00%
• Chromium (Cr): 19.00–21.00%
• Iron (Fe): Balance
• Molybdenum (Mo): 2.00–3.00%
• Copper (Cu): Max. 3.00–4.00%
• Carbon (C): Max. 0.07%

These carefully balanced elements contribute to the alloy's superior corrosion resistance and mechanical strength. The presence of nickel and chromium enhances its overall stability and ability to resist oxidizing environments, while molybdenum adds an extra layer of protection against pitting and crevice corrosion.

Mechanical Standards

Nickel Alloy 20 is manufactured in compliance with several industry standard specifications, including B464 and B468. These standards ensure that the alloy meets stringent requirements for performance, safety, and reliability across various applications.

Key mechanical properties defined by industry standards include:

• Grain Size Requirement: Specific grain size is critical for ensuring optimum mechanical properties.
• Max Hardness: Maintained within defined limits to ensure ductility and prevent brittleness.

Thermal Properties

The thermal characteristics of Nickel Alloy 20 are another noteworthy aspect:

• Modulus of Elasticity: 28 x 10^6 psi
• Mean Coefficient of Thermal Expansion: 8.3 (IN./IN./°F x 10^-6)
• Thermal Conductivity: 148 BTU-in/ft²-h-°F

These properties indicate that Nickel Alloy 20 can handle temperature variations while maintaining its physical integrity, making it ideal for thermal applications in various industrial settings.

Applications

Due to its exceptional properties, Nickel Alloy 20 finds its applications in numerous industries, including:

1. Chemical Processing: Used in the manufacture of valves, piping, and heat exchangers, it provides reliable performance in processing sulfuric acid and other corrosive substances.
2. Oil and Gas: Extensively utilized in offshore platforms and refineries where resistance to harsh chemicals is essential.
3. Power Generation: Employed in components that require high-strength materials capable of withstanding extreme environments and pressures.
4. Pharmaceuticals: Chosen for its non-reactive properties, ensuring that it does not contaminate sensitive processes.

Conclusion

In summary, Nickel Alloy 20 offers a unique combination of strength, resistance to harsh chemicals, and ability to withstand varied temperatures, making it an invaluable choice for industries that demand reliable materials. Its adherence to stringent industry standards ensures that it remains a preferred option for engineers and manufacturers looking to optimize their operations with durable, dependable materials.

For further inquiries regarding our range of Nickel Alloy 20 products or to discuss specific requirements, please contact us. Our team is dedicated to providing customized solutions that meet your unique needs and challenges.