New Lightweight Steel Could Improve Cars’ Fuel Efficiency

Posted by Mike Confino, February 7, 2015

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The price of petrol may have fallen, but car makers are still keen to improve fuel efficiency. Building vehicles with lighter materials is one approach: trimming a car’s weight by one-tenth can boost fuel economy by 6–8%. But steel remains the preferred construction material for cars—other metals are costlier and harder to work with. The challenge is to find a light, strong, ductile steel alloy, often made by exchanging some of the iron for aluminium and other elements.

via New Lightweight Steel Could Improve Cars’ Fuel Efficiency – Scientific American.