Leaf springs turn to composites for lightweighting


Automakers are targeting all areas of the car in their quest for lightweighting and in future, they may even consider switching from heavy steel leaf springs employed in suspension systems due to a joint development of polyurethane supplier Henkel (Dūsseldorf, Germany) and composite component manufacturer Benteler-SGL (Ried im Innkreis, Austria).

Working with Benteler-SGL, Henkel has developed a process for resin transfer molding (RTM) of glass-fiber-reinforced leaf springs that uses a polyurethane matrix resin. Compared to conventional leaf springs made of steel, these composite leaf springs are up to 65% lighter....
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