hybrid vehicle sales to reach 2.3 mil- lion units by 2015, or 4% of global light-vehicle sales. T is growth should represent considerable opportunities for casting producers, according to McGrew. “Any hybrid has a transmis-


sion and power electronics, [which means] aluminum castings all over,” he said. “You probably have as many or more—probably more—than in a conventional car. You have the hybrid plus the conventional drivetrains.” Engine head and block castings,


therefore, still are used in hybrid vehicles, in addition to the transmission housings required to shift between gas and electrical modes. Many nonferrous structural castings, such as control arms and panels, also will be no diff erent in hybrid systems than in cars powered by traditional drivetrains. T e long-term prospects for


hybrid cars may be less rosy than the short-term forecast indicates. Com-


Other environmentally friendly end-use markets for castings include hybrid and electric trains, as well as alternative energy sources like geothermal power, which accounted for an estimated 10.7 gigawatts of energy in 2010.


46 | METAL CASTING DESIGN & PURCHASING | Sept/Oct 2011


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