Hastelloy C276

Hastelloy C276 is a nickel‑based alloy with nickel as the highest content element (approximately 57 wt.%), and its major alloying additions are chromium (≈16%), molybdenum (≈16%), iron (≈5%), and tungsten (≈4%).

Each element contributes specific performance benefits. Nickel (≈57%) provides a stable austenitic matrix, ensuring excellent ductility, good fabricability, and outstanding resistance to chloride‑induced stress corrosion cracking. Chromium (≈16%) delivers strong resistance against oxidizing media such as nitric acid and wet chlorine gas. Molybdenum (≈16%) together with tungsten (≈4%) imparts superior resistance to reducing acids (e.g., hydrochloric and sulfuric acids), pitting, and crevice corrosion. This balanced composition gives C276 exceptional stability in aggressive environments even at elevated temperatures.

Viaken supplies Hastelloy C276 in three key forms: tubes/pipes, coiled strip, and plates/sheets.

Typical application fields and the corresponding uses of each form are listed below:

1.Chemical processing industry

Tubes/pipes – Process piping and heat exchanger tubing for corrosive fluids.

Coiled strip – Linings for columns, reactors, or expansion joints.

Plates – Reactor vessels, distillation towers, and storage tanks.

2.Flue gas desulfurization (FGD) systems in power plants

Tubes/pipes – Spray headers and slurry transfer lines.

Coiled strip – Cladding or overlay on existing ductwork.

Plates – Absorber tower shells and outlet ducts.

3.Marine and offshore engineering

Tubes/pipes – Seawater cooling lines and hydraulic tubing.

Coiled strip – Wrapped components or protective sheathing for subsea equipment.

Plates – Seawater strainers, valve bodies, and pump casings.

Page updated

Google Sites

Report abuse