Parts produced with Metal 3D Printing are weldable but material properties can change locally. There is a possibility of deformation after the welding process. Deformations can however be prevented by adequate material-specific precautions during the welding process. Material properties of welded metal 3D-printed parts are not yet available today and an important learning curve is still ahead of us. A redesign of the welding interface is often necessary in order to get the best results.

• Stainless Steel is weldable. It’s not the easiest steel to weld, but it can be welded.
  
  
• Aluminum is also weldable. The challenge with Aluminum is the state of the molten mass during the welding process. It has a very low viscosity, which means that the molten material can easily “flow out” of the welding spot.
  
  
• Titanium is generally also weldable, but this is usually done under vacuum and with electron beam welding. However, electron beam welding is very expensive and best performed by specialists.