What about black titanium stainless steel?
What I do is teaching: first, teach you how to make black stainless steel plate with mirror stainless steel plate. Second teach you how to remove this layer of black, revealing mirror stainless steel. These two items are the main processes for making black titanium plate labels.
It is not easy to strip the black of the board for the purpose of etching the logo. There is hardly a chemical that can pass black. The so-called qualified fade, that is, after fading black, to ensure that the bottom of the mirror stainless steel. Without this standard, a strong acid or ferric chloride would corrode, but the surface black would have been roughened and not shiny, which would have been unsuccessful and less useful.
A black titanium stainless steel plate in recent years a large number of signs used in industry (the back of the board also has some kind of black ash), not the actual titanium plate, the layer of black and no titanium metal components, stainless steel should be black.