INCONEL C-276 | Corrotherm International

Key properties (in annealed condition)

Tensile strength: 45.4 Ksi
Yield strength: 105.4 Ksi
Elongation: 70%

Composition

Nickel (Ni): Balance
Molybdenum (Mo): 15-17%
Chromium (Cr): 14.5-16.5%
Iron (Fe): 4-7%
Tungsten (W): 3-4.5%
Cobalt (Co): 2.5% max
Manganese (Mn): 1% max
Vanadium (V): 0.35% max
Silicon (Si): 0.08% max
Phosphorus (P): 0.04% max
Sulphur (S): 0.03% max
Carbon (C): 0.01% max

For over fifty years INCONEL® alloy C-276 has been associated with outstanding corrosion resistance in both acid and alkali media. The Nickel-Chromium-Molybdenum superalloy combined with a controlled amount of Tungsten has made this the material of choice for severe corrosive environments. The low carbon content minimises the carbide precipitation during heat treatment and during welding. As a result in as-welded structures, the excellent pitting and crevice corrosion resistance is maintained. The welding consumable is often overmatched with lower alloyed materials to provide security in the weld zone.

The alloy has been successfully adopted in chemical processes containing ferric and cupric chloride ions, chlorine, hypochlorite, chlorine dioxide, organic acids, acetic anhydride, seawater, brine and sour oil and gas wellhead fluids.

Applications for the alloy include power station flue gas desulphurisation components like ducts and fans, louvers and gas valves, dampers, scrubbers, chimney stack linings and containment housings. In chemical, pharmaceutical and food processing the mixing vessels and reaction chambers together with heat exchangers and transfer piping, valves and pumps have been manufactured in INCONEL® alloy C-276. Aggressive environments in the pulp and paper and waste fluid treatment plants will use INCONEL® alloy C-276 as a result of the overall corrosion resistance provided by the alloy in the most aggressive sections of the system.