Valland's ToZero Project validates recycled automotive aluminum scrap for LPBF, cuts carbon footprint 73%

Italian additive manufacturer Valland, in collaboration with Politecnico di Torino, Politecnico di Bari, and Fontana Group, has demonstrated under Italy's Accordi per l'Innovazione-backed ToZero project that recycled automotive aluminum scrap can be converted into powder suitable for laser powder bed fusion (LPBF). The consortium built a structural connecting node called "Voletto" using reclaimed AA5083 powder, achieving no hot cracking and mechanical strength within targeted ranges. Topology optimization reduced the part's mass from 1.68 kg toward 0.8 kg, and an ISO 14040/44-compliant life-cycle assessment showed a 73% reduction in carbon footprint. However, Valland noted that recycled AA5083 prints significantly slower than commercial AlSi10Mg, framing print speed as the remaining barrier to industrial-scale deployment.

This project sits at the intersection of two critical AM industry forces: the push for sustainable feedstock sourcing and the materials qualification discipline challenge of qualifying non-virgin powders for production. Valland's work parallels efforts by 6K Additive, which recycles spent nickel superalloy powder through its UniMelt process under a long-term agreement with Siemens Energy, and Continuum Powders, which transforms reclaimed aerospace-grade scrap into powder via its Melt-to-Powder process. The key distinction is that Valland is targeting automotive aluminum scrap, a lower-cost, higher-volume waste stream compared to aerospace nickel alloys, but one that introduces greater compositional variability. The print-speed gap with AlSi10Mg underscores that recycled feedstock must overcome not just qualification hurdles but also economic competitiveness in throughput, a factor that will determine whether this approach scales beyond demonstrator parts.

For Valland, the practical next step is to narrow the print-speed gap through parameter optimization or alloy modification while maintaining the recycled content's environmental benefit. The ToZero project validates the technical feasibility of closed-loop aluminum recycling for LPBF, but industrial adoption will depend on whether the productivity penalty can be reduced to within acceptable margins for automotive production economics. Buyers evaluating recycled metal powders should weigh the carbon footprint advantage against the longer build times and potential cost premium, recognizing that this remains a pre-commercial technology with a clear path to improvement rather than a drop-in replacement for virgin alloys.