Mid-grade aluminum that is not considered breakage but not as clean as aluminum.
If you are looking to recycle Aluminum #3 you can bring it to your scrap yard and ask them how they classify it. It will usually be seen as a mid-grade aluminum. Not quite clean enough for a clean aluminum price but not dirty enough to be classified as a aluminum breakage. You can contact your scrap yard on details how they classify all their metals.
We did not find any yards in Ashburn, VA that accept Aluminum #3