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

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UNS N08020/Alloy20/2.4660 Chemical Composition

C	Mn	P	S	Si	Ni	Cr	Mo	Cu	Nb+Ta	N	Fe
≤0.07	≤2.00	≤0.045	≤0.035	≤1.00	32.00-38.00	19.00-21.00	2.00-3.00	3.00-4.00	8*C-1.00	...	Bal

UNS N08020/Alloy20/2.4660 Mechanical Properties

Tensile Strength Mpa	Yield Strength Mpa	Elongation in 2 in %
≥550	≥240	≥30

UNS N08020/Alloy20/2.4660 Material Summary

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.

Standard download

ASTMB729-20 Standard Specification for Seamless Nickel-Iron-Chromium-Molybdenum-Copper Nickel Alloy Pipe and Tube

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