Summary for titanium coating on titanium Discussion
Titanium coating on titanium is discussed as a way to add 20 to 30 microns while preserving an EDM-finished shape with extremely tight uniformity, including the ends of a cylinder. Simon Silva asks whether titanium can be built up on titanium and whether any process can hold thickness variation to within 0.5 micron. H R Prabhakara отвечает that it should be possible using PVD techniques, since PVD coatings are conformal and can follow the existing geometry closely. He adds an important practical caveat: the approach would be economical mainly if the production volumes are large. The thread does not name any U.S. suppliers or provide a specific process recipe beyond PVD, and no one contradicts the feasibility claim in the excerpt.
Q. I have a titanium shape that includes curves and straight segments with very smooth surface (High end EDM). I am trying to build up the surface with say 20 to 30 microns of Titanium. It is critical to have a very uniform thickness so that the original shape is maintained precisely to better than 0.5 micron uniformity of the coated thickness. In other words suppose we have a cylinder shape and we desire to build up 20 microns, then the thickness of the highest peak vs the lowest valley should be no more than than 0.5 micron. This 0.5 micron max deviation should also apply to the ends of the cylinder. Is it possible to build up Titanium on Titanium? what process (if any) can accomplish what I desire? also if you know US companies that can do so, please suggest names. Thanks in advance to all responding
Simon Silva
– California
September 20, 2025
A. It should be possible by PVD techniques where coating is conformal. It would be economical if volumes are large.
H R Prabhakara
– Bengaluru Karnataka
September 21, 2025