Melonite vs Tennifer. If you do a Google search under this title yo will come upon a link for a discussion of the two on pistol slides. I called and talked with the people at Burlington that do the Melonite process and the QPQ treatment can be done to 416R. It leaves a black coating on the surface.
Melonite is the same process as Tennifer, just different trade names.
I'm not sure if this is the same as what J-tex does, I'm unable to get them to answer their phone, at either location.
The only possible draw back is the temperature range the coating is done at 900 to 1050 degrees. I do not know if this would be a problem. The only sure way to know would be to call the Crucible Steel service center and find out.
Reading that old posting from Speedy about the color of the finish, leaves me with doubts about this being the same treatment?