New Alloy Turns Scrap Aluminum into High-Value Auto Parts

Researchers at Oak Ridge National Laboratory (ORNL) have developed a new aluminum alloy, called RidgeAlloy, that could transform how recycled scrap is used in the automotive industry. By turning low-value post-consumer aluminum into structural materials, the innovation could reduce energy use, strengthen domestic supply chains, and reshape the future of car manufacturing.

The breakthrough comes at a critical time. Aluminum-intensive vehicles, such as Ford’s F-150 trucks, began entering the U.S. market in 2015. By the early 2030s, many of those vehicles will reach the end of their lifespan, producing an estimated 350,000 tons of scrap aluminum sheets each year. Until now, most of this material has been downcycled into low-grade castings or exported overseas, since impurities from shredding made it unsuitable for high-performance parts.

With RidgeAlloy, that barrier may finally be overcome. The new material was created by remelting post-consumer aluminum and recasting it with a blend of magnesium, silicon, iron, and manganese. Advanced tools such as high-throughput computing and neutron diffraction helped the ORNL team predict and fine-tune the alloy’s properties. The result is a recycled material that meets the strength, ductility, and crashworthiness standards needed for structural components like underbodies and frames.