HSLA is used primarily as a means to provide pieces to strengthen the underbody; it is used for such things as the rocker bulkheads, roof bow, and lower hinge reinforcement
. Solution strengthen material is used for reinforcement and structural support where there isn't a need for the kind of strength provided by HSLA.
This approach permits reducing the size of the steel hinge reinforcement
, saving 6.5 lb, while tripling door-sag stiffness.
Rocker bulkheads, lower hinge reinforcement
and roof bow are also of HSLA steel.
Superplastic forming, which involves both heat (up to 500[degrees]C) and pressure, was used to produce the internal components and the hinge reinforcements
. Other aluminum panels on the Maybach body shell are the roof, hood, and front fenders.