Au storm window's

Hi Guys

I have a question about some storm windows I just got from a friend who is a builder. I Have been scrapping for a little while..so to you veteran scrappers I'm still a rookie



So I have all the storm windows from a house, even the door. I have taken the glass out and those little cast pieces that hold them together and any screws etc.
I know this stuff is extruded Al, but when I take it to the yard will they make a different between Al that is totally clean and pieces that have paint on them?

Thanks for any info
Tinman