Friedland Scrap Recycling Lingo! 4
Irony Aluminum is similar to Aluminum Breakage, where you have a material that is primarily aluminum, but also contains some steel, or perhaps plastic or rubber. The difference is that Irony Aluminum is the classification for scrap made of sheet aluminum or aluminum extrusion, whereas Aluminum Breakage is the classification for scrap made of cast aluminum. Make sense?
In the picture, notice how there are some rusted areas, but how most of the scrap is not rusted. The areas without rust are made of aluminum and will not stick to a magnet, while the areas with rust are steel and will stick to a magnet.