Weight/Strength of aluminum versus plastics

[Bern123]

At parity of maximum resistance before failure (in the case of aluminum, deformation), weighs less aluminum or plastic?
Let me explain better: if i apply a force of 1000N on one end of a rectangular plate with a fixed fulcrum on other side, beyond this force both materials deforms / break. The plastic will obviously have a greater thickness of aluminum to counter the force. Now, will weigh more the plate of plastic or aluminum?

p.s. between all plastics, plexiglass have a good resistance?

 

[Drakkith]

I think you'd need to look up the density and strength for whatever materials you're interested in.
This isn't really something that would be well known here on PF.

 

[mrspeedybob]

There are many different kinds of plastic you'd have to be specific about which one. I suspect there are different ways of preparing aluminum also (heat treating, peening etc.). You need to be more specific.

 

[Bern123]

I've solved, I looked to the flexural strength that is calculated with standard dimensions independently of the material and density of material.

 

[Aero51]

Have you tried Materials Web?

http://www.matweb.com/