The A6061 aluminum alloy has been used typically for the forged suspension parts for automobiles. In response to the requirement for reducing automobile weight, we developed a high-strength 6000 series aluminum alloy (KS651) having excess Si to reduce the weight of forged aluminum suspension parts. To further respond to ever growing needs for automobile weight reduction, we developed forged suspension parts using an aluminum alloy having even higher strength (KS610) (Photo 1). The following describes properties of KD610 alloy and the forged automobile suspension parts made of the alloy.
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