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Description / Abstract:
The materials defined by these specifications are formable,
non-heat treatable 5XXX series (magnesium based) autobody aluminum
sheet alloys.
Four distinct variants are identified: A1 A2 define two
strength levels of low magnesium structural alloys that have to be
capable of limited Class-1 exposure (e.g. A-pillar), while A3
A4 define two categories of higher magnesium alloys with medium
strength and high formability, suitable for closure inners and
reinforcements. Furthermore, these alloys may be supplied bare or
pretreated. Specification WSS-M10P12-A1 shall be used where
pretreatment is necessary to promote durable structural adhesive
bonding. Pretreated material may be supplied, at the supplier's
option and expense, even when not explicitly specified in the
material requirements.