EOS and Constellium have partnered to introduce a new aluminum alloy and rebrand an existing one, aiming to enhance aluminum's role in additive manufacturing.
Industrial 3D printing company EOS has announced a collaboration with aluminum alloy developer Constellium, which will see a new aluminum alloy added to EOS's portfolio and an existing material rebranded. Under this agreement, Constellium's Aheadd CP1 alloy will be introduced as EOS Aluminium Constellium CP1. Concurrently, EOS's current Al5X1 material will be renamed EOS Aluminium Constellium Al5X1 and will also be included in Constellium's alloy catalog.
This partnership extends beyond these two materials, forming the foundation for a long-term effort to develop additional aluminum alloys specifically for additive manufacturing. The collaboration combines EOS's expertise in 3D printing processes and hardware with Constellium's strengths in alloy development. The objective for customers utilizing EOS or AMCM metal systems is to provide validated process parameters, thereby accelerating material qualification for production applications.
EOS Aluminium Constellium CP1 is slated for release in August 2026 and is positioned as a high-performance alternative to AlSi10Mg. It offers increased strength with good elongation, a simplified heat treatment process that eliminates the need for quenching, and stable processing at high laser power due to the absence of volatile elements like magnesium and zinc. The alloy is also noted for its corrosion resistance, electrical and thermal conductivity, and suitability for anodizing and electrochemical polishing.
Target applications for EOS Aluminium Constellium CP1 include heat exchangers, semiconductor components such as heat sinks and wafers, and parts requiring surface finishing, polishing, and anodization. It is also suitable for components exposed to corrosive environments and lightweight structural parts subjected to moderate mechanical loads. The EOS Aluminium Constellium Al5X1 material will continue to be available, primarily for aerospace, transportation, and motorsport applications, recognized for its high strength, high elongation, and anodizability.
This partnership between EOS and Constellium signifies a strategic move to improve the performance and accessibility of aluminum alloys in additive manufacturing. By combining material science with validated process parameters, they aim to reduce qualification times and enable wider industrial adoption. This development is crucial for sectors like aerospace and automotive, where lightweight, high-strength, and corrosion-resistant materials are in demand for critical components.
Edited by the news editor with AI from the original report — please refer to the original source.