Although only a third the weight of steel, aluminium components usually have to be made a bit beefier to replace steel ones, which limits the overall weight savings to about half.

• 虽然铝材料的重量是钢铁的三分之一，铝零件通常要比其所代替的钢铁零件更加粗壮些，而这又铝零件的重量优势减少了近一半。