Reuters reported that the US released new standards for fuel efficiency requiring automakers to trim weight using steel substitutes such as aluminum, advance steel alloys and magnesium.
Meanwhile, the new standard requires automakers to reach an average fleet fuel economy of 35.5 miles per gallon by 2016 from current figure of 30 miles per gallon in 2010.
Automakers are looking to trim as much as 10% of the total weight of car and trucks by replacing steel with lighter material may also increase built cost by hundreds of dollars per car.
（Sourced from YIEH.corp）
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