Magnesium will be used extensively in the folding hardtops of General Motors Corp.’s upcoming ’04 Cadillac XLR roadster, reports American Metal Market. Given its lighter-than-aluminum weight and high strength, magnesium apparently is ideal for the folding-top application, where magnesium die castings will be used for the frame, supports and stiffeners, reports AMM. The two primary frame castings will comprise between 12 lbs. (5.4 kg) and 15 lbs. (6.8 kg) of magnesium. The supplier is ...

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