ASME SB622 UNS N10276 Hastelloy C276 Tubing

ASME SB622 UNS N10276 Alloy C276 Seamless Nickel Alloy Tube

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Alloy C276 seamless nickel tubing is a nickel-molybdenum-chromium alloy having excellent corrosion resistance in a wide range of severe environments. The high molybdenum content makes this alloy especially resistant to pitting and crevice corrosion. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures.

The Hastelloy C276 Pipe is covered by 2 specifications i.e. ASTM B622 as well as ASTM B619. Typically the ASTM B622 Pipe is constructed in a seamless manner, whereas the construction of the ASTM B619 Pipe is welded. Amongst all the Hastelloy variations the C276 Hastelloy Pipe is the most popular one.

Characteristics

Alloy C276 is one of the few alloys resistant to wet chloride gas, hypochlorite and chlorine dioxide solutions.

Alloy C276 has exceptional resistance to strong solutions of oxidizing salts, such as ferric and cupric chlorides.

Alloy C276 is not prone to grain boundary precipitation in the as welded condition and therefore suitable for many chemical process applications

Alloy C276 Chemical Composition

Alloy C276 Mechanical Properties

Alloy C276 Equivalent Grade

Specification

Application

• Digesters and bleach plants in the paper industry.

• Components exposed to sour gas.

• Equipment for flue-gas desulfurisation plants.

• Evaporators, heat exchangers, filters and mixers used in sulfuric acid environments.

• Sulfuric acid reactors.

• Organic chloride process equipment.

• Equipment for processes utilizing halide or acid catalysts.