3.2.2. AA6111 closure automotive sheet
For automotive closure applications AlMgSi alloys are generally
specified. This is because of their bake hardening properties,
which are utilized to increase the strength of formed panels during
the paint bake. In this evaluation, AA6111T4 sheet with a gauge
of 0.9mm was used. Two surface textures: mill finish (MF) and
electro-discharge textured (EDT) that have different tribological
behaviour during forming, were examined for the AA6111T4 sheet
in order to assess the effect of surface texture on the process
The mechanical properties and surface conditions of the AA6111T4
sheet are listed in Tables 3 and 4 respectively.