Is this aluminum OK to use???

[photodoctor]

I'm starting construction on a scratch-built metal airplane. I have some sheets of 2024 T3 which has been sitting in my garage for years and I'm not sure whether I should use the stuff (refer to attached photo). It never got wet and the metal doesn't seem to be pitted. I haven't tried scotch-briting it with lacquer yet but the little bit of rubbing I did with a piece of steel wool seemed to shine it up. I'm new to metal work so any help will be appreciated.

Also, these sheets are labeled, "Bare Alcoa", this means that they'll NOT Alclad sheets, correct? My plans call for Alclad metal for building the wing ribs. Can I use this stuff and simply treat it with corrosion protection?

 

[djschwartz]

 

[photodoctor]

 

[jumpinjan]

 

[Dan Thomas]

 

[kennyrayandersen]

 

[thetford]