Eplus3D Validates Copper-Nickel Alloy for Aerospace With LPBF

Eplus3D has helped Young-Will Aerospace complete a full process validation for copper-nickel alloy parts made on its EP-M400 metal laser powder bed fusion system. The collaboration produced crack-free components with a tensile strength of 570 MPa, which the partners say is 18 percent stronger than conventionally forged material in the same alloy.

Nickel-copper alloys have long been considered difficult candidates for powder bed processing. Copper tends to segregate at grain boundaries during melting, which opens the door to cracking and porosity if the parameters are not tightly controlled. Eplus3D and Young-Will Aerospace tackled that problem by optimizing laser power, scan speed, hatch spacing, and scan strategy together instead of tuning each variable in isolation. The result was a repeatable process window rather than a single lucky build.

The EP-M400 itself is a mid-to-large format metal PBF system with a 400 x 400 x 450 mm build chamber, up to six lasers, and a maximum build rate of 210 cm³/h. Multi-laser coordination matters for this kind of alloy because the heat distribution across the bed directly affects how grains form and whether cracks nucleate. Having six independently controlled lasers gives the system enough flexibility to manage that thermal profile.

For aerospace users, the appeal of copper-nickel alloys is practical. The material offers good corrosion resistance, stable strength at moderate temperatures, and decent processability once the window is found. The companies pointed to fuel pipelines, hydraulic components, landing gear parts, combustion chamber hardware, fasteners, rocket engine pipe joints, sealing structures, and liquid hydrogen storage systems as candidate applications. Many of those parts are currently assembled from multiple machined and welded pieces. LPBF could turn some of them into single integrated structures, cutting down on joints and assembly steps.

The validation also matters for Eplus3D's positioning in the market. Showing that the EP-M400 can serve as a development platform for special alloys, not just a production workhorse for established materials like titanium or stainless steel, expands the case for the system beyond commodity manufacturing. Whether Young-Will Aerospace moves to full component qualification and flight use will depend on more than tensile data, but a validated crack-free process at 570 MPa is exactly the foundation those next steps require.

This work sits alongside similar efforts elsewhere. Velo3D, for example, holds a $6 million US Navy contract to qualify copper-nickel alloy on its Sapphire line, citing the same maritime and aerospace demand drivers. The parallel pushes underscore that CuNi qualification is becoming a genuine competitive frontier in metal AM, not just a niche research project.