Very much doubt it, but you're not thinking of fatigue life are you? Ie aluminium has a fixed fatigue life - meaning an ally frame will eventually fail if ridden normally where steel might last 'forever'...
'Fixed' as in pre-determind with a big 'x' factor taken into account.
Simple explination; if you take steel or ti for example, theres a fixed max. stress that you can put on the material, at which beyond it the material will no longer go back to its unloaded form (thus permanent deformation). Stay under this load and your construction will last for ever. Meaning; no fatigue.
However; on aluminium alloys this treshold/boundry degrades over time, much like an ever decreasing line to some extend, especially when its subjected to forces. To cope with this, there are studies preformed to determine what will be save for a given lifetime. This still is a not an exact science and thus the margins are much, much bigger so you'll never come close to failure.
Alumium in general is not a material to be used in areas where its subjected to 'moving' stresses, meaning flexing, spring loads and such, because of the absence of a fixed fatique treshold. This, since the fatique limited to which it will not deform, will decrease overtime. There are some exceptions, but limited. By inmensly overengineering the construction you can use it in applications where the stresses are not constant (constant changing loadcycles) or subject to temperature changes (has significant impact on material properties). This way its possible to use it in aeroplanes for instance, where its subjected to great differences in stresses due impact loads and the constant change in temperature.
As said, the margins to be save are much, much greater than with other materials and its the reason why there are so much stricked regulations around aeroplane constructions. The decreasing fatique of aluminium became really known during the '50/'60s due plane crashes.