I was thinking about where I might of found cadmium on my ad
To date I can’t think of any bits that would be
It seems to all be paint, zinc or nothing, and in some places zinc so cheap they didn’t even put copper under it
Zinc is poor adhesion to steel directly but can be sufficient if the alloys and surface prep is compatible

If someone knows a definitive place there was cadmium let me know
I would be curious to find out
Thanks
-s