Hastelloy Alloy C276 Tubing, Alloy C-276 Pipe

Hastelloy C-276, corresponding to UNS N10276, is a nickel-chromium-molybdenum-tungsten corrosion-resistant alloy. It is often described as a general-purpose material for harsh corrosive environments, a statement that can easily obscure the selection criteria. C-276 can withstand a variety of oxidizing and non-oxidizing acids and has strong resistance to chloride pitting, crevice corrosion, and stress corrosion cracking, although its specific performance depends on the concentration of the medium, temperature, and the stress conditions on the equipment.

C-276 pipes are commonly used in chemical reactors, heat exchangers, towers, and corrosive fluid pipelines. They are also found in flue gas desulfurization, pulp and paper manufacturing, and some acidic oil and gas environments. When dealing with mixed acids, chlorides, or media with fluctuating composition, it often offers more margin than conventional stainless steel, but the final selection should be based on actual corrosion data, design pressure, and operating temperature.

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