- Joined
- Apr 13, 2004
- Messages
- 17,086
I wonder if that is instead a chemical conversion coating? Those are designed to improve the adhesion of a paint/coating on metal surfaces.
Guy, it could very well be. It was a lot more difficult to remove on the last couple I've stripped, and as CHEMMINS shows above, much more even than the old "decarb". However, it does seem to develop surface rust rather easily, so I don't know.