I've already pointed out several times that a looming problem exists with the elimination of the largest source of aluminum scrap demand, when con- ventional engine blocks, transmission housings, and pistons are no longer needed, or are only required to a very limited extent. What does that mean? At present, these essential power train components in internal combustion vehicles are manufactured worldwide from highly alloyed aluminum materials. Those are ideal for mixed scrap recycling due to their high copper, zinc, and iron content. If these applications are eliminated on a large scale, mixed scrap recycling becomes a problem.
Well, as a first, comparatively simple step, we need to develop recycling-friendly alloys for new applications that can tolerate higher limits for copper, zinc, iron, and other elements. That in itself will allow us to use more scrap, but it won't be able to compensate for the fall in scrap demand for die casting alloys that I mentioned before. That problem requires truly new approaches.