A nickel base alloy particularly resistant to hydrochloric acid at all concentrations and temperatures including the boiling points, and also hydrogen chloride gas. The new alloy B-3 exhibits less cracking than even alloy B-2, which was developed for improved chemical stability.
A nickel-molybdenum-chromium alloy with tungsten added that results in excellent corrosion resistance in a wide range of severe environments including wet chlorine gas, hypochlorite, and chlorine dioxide solutions. The alloy is especially resistant to pitting and crevice corrosion and has good resistance to sulphuric, phosphoric, acetic, and nitric acids. Alloy C-276 is an improved version of alloy C in that it has vastly improved fabricability and resists the formation of grain-boundary carbide precipitates during welding. Alloy C-4 has outstanding high temperature stability, while for even better overall corrosion resistance, alloy C-22 excels in pitting resistance.