by Burgerman » 18 May 2018, 09:59
Its going to be hard to find one. There are thousands of aluminium alloys. And no aluminium used alone. So first you would need an exact makup. And tiny differences drastically change properties, sometimes in opposite directions. Bending, compression, hardness, tensile strengths are all changed individually. And making it even harder, aluminium alloys get soft when annealed, or made, and can be hardened by heat treatment in different ways, and can harden over time due to temperature changes longer term. And can work harden. So a beam that experiences a bending force for eg, will get much stronger and bend less, over time. And more brittle and liable to fatigue fail because of this too.
So its best to use larger, over strong assembies. For eg a motorcycle frame made of alloy, is massively over strong, and over size. The ideal thing on a bike to remove frame flex and make it handle better. And so also remove hardening and fatigue failures at the same time because of less flex. So alloy is a good choice here only when over engineered markedly.
So any tables or propert sheets should be taken as only a part of the equasion, and good understanding of how the stuff behaves and careful design is the rest.