The material is also sold under other names including Inconel C276.

Alloy C276 is well known for its outstanding corrosion resistance in a wide range of extremely aggressive media and very punishing environments. It is truly a superalloy amongst the high nickel-chromium-molybdenum materials, and is considered the preeminent alloy for the chemical industry.

It resists many of the most severe media encountered in chemical processing, including reducing and oxidizing acids. It has exceptional resistance to sulphuric acid and hydrochloric acid, plus excellent resistance to phosphoric acid. The controlled amount of tungsten and very high content of molybdenum :(up to 17%) C276 has excellent resistance to stress corrosion cracking, and pitting. Alloy C276 is also almost unmatched in its resistance to seawater especially under crevice conditions which would induce attack in other commonly used materials such as 316 stainless steel, 6MO stainless and monel. Alloy C276 is also favoured by the oil and gas industry because of its ability to handle “sour”( natural) gas, combined with its corrosive resistance by seawater. In such environments it has become very popular in the manufacturer of valves and pumps.

Because of the alloys high chromium and nickel content, plus the addition of tungsten and cobalt. C276 is very hard to machine, and the raw material is expensive. Hastelloy makes surprisingly good compression fittings and valves but they will cost at least 9.0 times the price of the equivalent item in 316 stainless steel.