Differences between EN-AW 5080R & EN-AW 5083R

[Dentz]

Hello,

Can someone explain to me the differences between EN-AW 5080R & EN-AW 5083R?
Also, what does the 'R' stand for.
I know that 5083 is used in corrosive environments, does this feature also apply for the 5080?

Thanks in advance.

 

[TVP]

The R means that the material has been annealed. It is from an obsolete Italian standard (UNI 3565). The following link shows how this and other codes relate to the contemporary temper designations used by all standards organizations:

http://www.commercialefond.it/eng/file.asp?id=ALLUMINIOCARATTERISTICHETECNICHEFISICHEP.19

 

[Dentz]

Tanks, that solves the R part. But what if there would be an S instead of an R, EN-AW 5080S?

And there is also a part 2 to this question, something about corrosion on the 5083, but I'll get to that later.

 

[TVP]

I have never seen an S used as part of the designation for an aluminum alloy.