Yes, absolutely. I have not tried to attain the high temperatures on the above chart, but you can easily get the molten salts into the 700 degree plus range. That will do what you said you were looking for. I certainly would not attempt to blue larger parts, like a pistol frame or slide, on a stove top.
To be precise, I "cook" outside on a cast iron natural gas burner actually made for fish cooking, on my covered patio area. Before I started that, I did a few runs in the kitchen, but the "other" person who lives here with me prefers the outdoor method. No reason at all this could not be done in the kitchen, as I have done, with a bit of care.
