aluminum sheet - strange mechanical properties

[cervantes]

hi there,

Is it possible that aluminium sheet (4mm) has following properties:

290 MPa (Rm) and Elongation at the range of 26% or this is contrary?
There are no such values combined in any aluminum properties datasheets

this the results we've got from laboratory - did they make a mistake?

M

 

[EdStainless]

Why not? What is wrong?

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Plymouth Tube

 

[cervantes]

to hard to be so flexible?...

 

[CoryPad]

5454-O typically is 250 MPa and 22 %, so it is possible to get there with material low in impurities.

 

[EdStainless]

You also need to know how the sheet was processed (stretch leveled?) and which direction was tested (L or T).
With sheet you should always have both directions tested.

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Plymouth Tube

 

[cervantes]

thanks for interesting hints