Hastelloy C-276 is wrought from a nickel-molybdenum-chromium combination. The metal was designed to be an improvement over Alloy C. Unlike Alloy C, Hastelloy C-276 does not require heat treatment after it is welded. It is often utilized as a multipurpose solution to mixed conditions where any number of corrosions, oxidation and interacting media might occur. Its corrosion resistance is also used in strong chemical environments such as chemical processing plants. Additionally, C-276 is one of the few nickel alloys that displays resistance against chlorine, along with pitting, cracking and creeping from other acids. Its extraordinary resistance to all these substances comes from an addition of tungsten in its composition.
While Hastelloy C-276 is the most universally resistant substance to corrosion that is currently available, it is not infallible. The metal should not be exposed to high temperature, highly acidic environments. Similarly, it is more easily worked with cold-working practices; hot-working hardens it more easily. If hot working, temperatures should be kept between 1600°F and 2250°F.
Gas industry
