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HASTELLOY C276 is a Nickel-chromium-molybdenum wrought alloy that is considered the most versatile corrosion resistant alloy available. This alloy is resistant to the formation of grain boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in an as welded condition. Alloy C-276 also has excellent resistance to pitting, stress-corrosion cracking and oxidizing atmospheres up to 1900°F. Alloy C-276 has exceptional resistance to a wide variety of chemical environments.


Characteristics

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

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

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


Applications

Digesters and bleach plants in the paper industry.

Components exposed to sour gas.

Equipment for flue-gas desulfurization 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.

Tube: ASTM B619 ASTM B622 ASTM B626 Din 17751

Pipe:ASTM B619 ASTM B622 ASTM B626 Din 17751


Chemical Composition%

Nickel .....................................................................Balance

Molybdenum .........................................................15.0-17.0

Chromium.........................................................14.5-16.5

Iron.........................................................................4.0-7.0

Tungsten ...................................................................3.0-4.5

Cobalt ....................................................................2.5 max.

Manganese ........................................................1.0 max.

Carbon...........................................................0.01 max.

Vanadium........................................................0.35 max.

Phosphorus ..................................................0.04 max.

Sulfur ..............................................................0.03 max.

Silicon ..............................................................0.08 max


Applications

Chemical processing, waste treatment, pollution control, pulp and paper production, and marine engineering.


Features

Alloy C-276 has excellent resistance to localized corrosion, stress corrosion cracking, and to both oxidizing and reducing media, thus making it suitable for a wide variety of chemical process environments, including ferric and cupric chlorides, hot contaminated media (organic and inorganic), formic and acetic acids, seawater and brine solutions. It is one of the few materials that withstands the corrosive effects of wet chlorine gas, hypochlorite and chlorine dioxide.


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