ASTMB729 UNS N08020/Alloy20/2.4660 Seamless Nickel Alloy Steel Pipe

UNS N08020 seamless pipe, also known as Alloy 20 pipe, is a high-nickel alloy renowned for its exceptional corrosion resistance and mechanical properties. It is a popular choice for applications in industries such as chemical processing, petrochemical, marine, pharmaceuticals, and food processing.

Key Characteristics:

• Corrosion Resistance: Alloy 20 exhibits excellent resistance to a wide range of corrosive environments, including sulfuric acid, phosphoric acid, nitric acid, and aqueous salt solutions.
• High Strength: This alloy offers superior strength and toughness, making it suitable for demanding applications where mechanical integrity is crucial.
• Good Fabrication: Alloy 20 is readily weldable and can be formed into various shapes and sizes without compromising its properties.
• Temperature Resistance: It maintains its mechanical properties and corrosion resistance over a wide temperature range, from cryogenic temperatures to elevated temperatures.

Typical Applications:

• Chemical Processing: Handling and transporting highly corrosive chemicals and solutions.
• Petrochemical and Refining: Components in refineries and processing plants exposed to harsh environments.
• Marine Industry: Heat exchangers, piping systems, and other components in marine environments.
• Pharmaceuticals: Equipment and piping used in the production and processing of pharmaceuticals.
• Food Processing: Applications where sanitary conditions and resistance to acids and salts are essential.

Standards and Specifications:

Alloy 20 seamless pipes are typically manufactured to meet industry standards such as:

• ASTM B729: Standard Specification for Seamless and Welded Austenitic Stainless Steel Pipe for High-Temperature Service
• ASME SB464: Seamless Nickel Alloy Pipe and Tube
• DIN 2.4660: Seamless Nickel Alloy Pipe and Tube

Available Forms:

Alloy 20 seamless pipes are available in various sizes, wall thicknesses, and lengths to meet specific application requirements.