Body - Audi Q7 361 Service

Body

Materials
In addition to the joining techniques employed,
selection of the correct materials is vital for
achieving both crash safety and body rigidity.
Depending on loading and weight, the most
suitable material is determined for each
component.
The proportions of the individual materials used are
as follows:
– Standard steels 36 %
– High-strength steels 26 %
– Higher-strength and super high-strength steels
32 %
– Aluminium 6%
The wing panels, bonnet and tailgate are made of
aluminium, making them some 22 kilogrammes
lighter than their steel counterparts. The weight was
further reduced through the use of various semi-
finished products*. With tailored rolled blanks, for
example, the wall thicknesses can be adapted to
withstand differing component loading. The
reinforcements for the rear longitudinal members
and the floor cover panel are made from tailored
rolled blanks.
* Semi-finished products: Pre-processed materials
for the manufacture of parts and components
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The sill tube consists of a rolled section because the
manufacturing tolerances are lower in this case
than for an extruded tube, enabling smaller wall
thicknesses. In order to meet pedestrian protection
requirements, plastic parts are used in the plenum
chamber/bulkhead area.