Nickel is primarily sold for first use as refined metal (cathode, powder, briquet, etc.) or ferronickel.   About 65% of the nickel consumed in the Western World is used to make austenitic stainless steel.  Another 12% goes into superalloys (e.g., Inconel 600) or nonferrous alloys (e.g., cupronickel).  Both families of alloys are widely used because of their corrosion resistance.   

The aerospace industry is a leading consumer of nickel-base superalloys.  Turbine blades, discs and other critical parts of jet engines are fabricated from superalloys.  Nickel-base superalloys are also used in land-based combustion turbines, such those found at electric power generation stations.  The remaining 23% of consumption is divided between alloy steels, rechargeable batteries, catalysts and other chemicals, coinage, foundry products, and plating.  

The principal commercial chemicals are the carbonate (NiCO₃), chloride (NiCl₂), divalent oxide (NiO), and sulfate (NiSO₄). In aqueous solution, the divalent nickel ion has an emerald-green color.