N10276 pipe

It is used in flue gas desulfurization systems because of its excellent resistance to sulfur compounds and chloride ions encounted in most scrubbers. C-276 alloy has excellent resistance to pitting and to stress-corrosion cracking. It is also one of the few materials that withstands the corrosive effects of wet chlorine gas, hypochlorite, and chlorine dioxide.

Alloy C 276 (UNS N10276/ 2.4819) is known for its corrosion resistance in a variety of corrosive media. The high molybdenum content imparts resistance to localized corrosion such as pitting. Low carbon minimizes carbide precipitation during welding to maintain the resistance of the welded joint heat affected zone to intergranular erosion. It is used in chemical processing, pollution control, pulp and paper, industrial and municipal waste treatment, and recovery of “sour” natural gas. Applications in air pollution control include stack liners, ducts, dampers, scrubbers, stack gas reheaters, fans and fan guards. In chemical processing, the alloy is used to make components such as heat exchangers, reaction vessels, evaporators and transfer piping.

ASTM B619 UNS N10276 Alloy C276 Tube covers 2 classes under this specification. In class 1, the Hastelloy C276 Tube is furnished in an as welded and solution annealed condition or these tubes could be welded along with being sized and solution annealed.

On the other hand, the class 2 Hastelloy C276 Welded Tubing produced according to the ASTM B619 specification is welded, cold worked and is furnished in a solution annealed condition.

This nickel steel alloy has also been found to be exceptionally resistant to stress corrosion cracking in petrochemical applications. Matrix stiffening provided by the molybdenum content results in high strength in a solid-solution alloy having good fabrication characteristics. Although this nickel alloy is primarily noted for heat and oxidation resistance it also has good resistance to chloride stress-corrosion cracking, carburization, and excellent resistance to reducing or carburizing atmospheres. Two common conditions that often lead to early failure in high temperature alloys, carburization and nitriding, Hastelloy X resists.

Alloy C276 Seamless Nickel Tube is a Nickel Molybdenum Chromium alloy with added tungsten for excellent corrosion resistance in a wide range of harsh environments. The high molybdenum content makes this alloy particularly resistant to pitting and crevice corrosion. The low carbon content minimizes carbide precipitation during welding to maintain the corrosion resistance of the welded structure. Its typical applications: pollution control, chemical processing, pulp and paper production and waste disposal.

Hastelloy pipes are highly resistant to localized corrosion, cracking and stress corrosion. The material specification of Hastelloy tube is a long-term and cost-effective solution to avoid damage.

The fluids used in the chemical processing of Hastelloy tubes are extremely corrosive and the materials of construction of the processing equipment require very special consideration. Without the right specifications, conditions can quickly degrade, resulting in equipment repair or replacement and costly manufacturing downtime.

For its myriad applications, the processing industry is always looking for highly reliable materials. The beneficial properties of Hastelloy have led to widespread acceptance and growth in applications in energy, health and environment, oil and gas, and pharmaceuticals.

Hastelloy tubing is suitable for applications in the chemical processing, pharmaceutical, agricultural, food, petrochemical and power industries. Hastelloy piping is often specified for highly corrosive industrial applications and is often used in processes where chloride is a component.