COMMON TRADE NAMES: Inconel® Alloy C-276, Hastelloy® C-276
Alloy C276 is a nickel-chromium-molybdenum solid solution strengthened super-alloy with a nominal chemical composition of 57% nickel, 16% chromium, and 16% molybdenum, with additions of iron, tungsten, and cobalt. It is commonly referred to by the tradename Hastelloy® C276 and the universal designation UNS N10276. C276 is often used in extremely corrosive environments that other alloys cannot withstand.
C276 is a workhorse in the chemical processing industry, owing to its corrosion resistance in a wide range of aggressive substances. C276 is used in the oilfield for aggressive sour service environments characterized by high levels of H2S, CO2 , and chlorides. It is also used in other industries where harsh environments are encountered, including the pharmaceutical and paper industries. C276 is used for valves in cryogenic service and has been used in superconductors at temperatures as low as -455°F (-271°C).
CRA offers specialty alloy C276 seamless pipe & tube for use in multiple industries and applications, including:
|≤ 0.02||14.5 - 16.5||BAL||4 - 7||≤ 1||≤ 0.08||15 - 17||≤ 2.5||≤ 0.03||≤ 0.03||≤ 0.35||3 - 4.5|
ASTM B622, ASME SB622
Per ASTM B622
|Tensile Strength||Yield Strength||Elongation|
|minimum, ksi||minimum, ksi||minimum, %|
|Elastic Modulus||103 ksi||29.8||29.1||28.3||27.3||26.4||25.5||22.37|
|Steel Making||Electric Arc Furnace followed by Vacuum Oxygen Decarburization (VOD) or Argon Oxygen Decarburization (AOD).|
|Pipe Making||Conventional Seamless Cold Finished Pipe and Tube Manufacturing Processes.|
|Heat Treatment||Cannot be hardened by heat treatment. May be provided in the annealed or cold hardened condition.|
C276 is part of the Hastelloy® C family of Ni-Cr-Mo alloys. C22 is an evolution of C276 with more chromium and provides more robust general corrosion resistance and better resistance to chloride-induced localized corrosion.