I rescued a bike from the trash, and the handlebars are a shiny metal with a wire brush finish.

How could I tell if they are titanium or stainless steel? What is the difference in the appearance of titanium and stainless steel? Could they be something other than titanium or stainless steel?

Here is a picture of the bike.



I don't have a good picture of the handlebars, and I am not at home, so I can't take one. But here is a close up of the handlebars from the other picture.