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HASTELLOY® C-276 alloy © 2020 Haynes International Principal Features 50 years of proven perbance in a wide range of aggressive chemicals HASTELLOY® C-276 alloy (UNS N10276) was the first wrought, nickel-chromiummolybdenum material to alleviate concerns over welding (by virtue of extremely low carbon and silicon contents). As such, it was widely accepted in the chemical process and associated industries, and now has a 50-year-old track record of proven perbance in a vast number of corrosive chemicals. Like other nickel alloys, it is ductile, easy to b and weld, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions (a b of degradation to which the austenitic stainless steels are prone). With its high chromium and molybdenum contents, it is able to withstand both oxidizing and non-oxidizing acids, and exhibits outstanding resistance to pitting and crevice attack in the presence of chlorides and other halides. Furthermore, it is very resistant to sulfide stress cracking and stress corrosion cracking in sour, oilfield environments. HASTELLOY® C-276 alloy is available in the b of plates, sheets, strips, billets, bars, wires, pipes, tubes, and covered electrodes. Typical chemical process industry (CPI) applications include reactors, heat exchangers, and columns. Nominal Comb Weight % Nickel: 57 Balance Cobalt: 2.5 max. Chromium: 16 Molybdenum: 16 Iron: 5 Tungsten: 4 Manganese: 1 max. Vanadium: 0.35 max. Silicon: 0.08 max. Carbon: 0.01 max. Copper: 0.5 max.