Seamless N08120 Nickel Alloy Pipe, conforming to ASTM B407, is a nickel-iron-chromium alloy designed for superior resistance to high-temperature oxidation and carburization. Comprising approximately 35% nickel, 45% iron, 22% chromium, and additions of molybdenum, copper, and niobium, this alloy balances strength, ductility, and corrosion resistance across a wide thermal spectrum. The seamless manufacturing process ensures consistent wall thickness and freedom from weld defects, critical for high-pressure and high-temperature services.
N08120 is often specified in applications where traditional stainless steels fall short, such as in reducing atmospheres or where exposure to sulfur-containing gases is prevalent. It adheres to strict quality standards, ensuring reliability in demanding industrial environments.
Mechanical Properties
(as per ASTM B407)
Grade | Tensile Strength psi(MPa) | Yield Strength ksi(MPa) | Elongation(%) |
| N08120 | ≥90000(621) | ≥40000(276) | ≥30 |
Features
Exceptional High-Temperature Resistance: Maintains mechanical properties up to 1100°C, with excellent resistance to scaling and oxidation in both reducing and neutral atmospheres.
Corrosion Resistance: Resistant to sulfuric and phosphoric acids, chloride-induced pitting, and stress-corrosion cracking, making it suitable for chemical processing and fossil fuel applications.
Low Thermal Expansion: Offers a low coefficient of thermal expansion, reducing thermal stress in components subject to frequent temperature cycles.
Weldability & Formability: Can be welded using standard techniques with matching filler metals, and its ductility allows for cold forming into complex geometries.
Application
Energy Production: Used in coal-fired power plant boilers, gas turbines, and waste-to-energy incinerators, where resistance to ash corrosion and high-temperature oxidation is critical.
Chemical Processing: Handles aggressive acids in fertilizer production, especially phosphoric acid plants, and sulfuric acid concentration units.
Heat Treatment Equipment: Ideal for furnace tubes, retorts, and radiant tubes in heat treatment facilities exposed to carburizing or nitriding atmospheres.
Petroleum Refining: Employed in reformers, heaters, and pipelines processing high-sulfur crude oil, resisting sulfidation and coking.
