I use this every year, for the “fireback” of an old fireplace which has a Magiglow gas insert. It lasts quite well, but will turn grey if the flames reach it for long periods.
Easy to use, but precautions are needed if indoors: it is pretty nasty, like most spray paints, and not to be inhaled.
Very pleased with product, will be buying more to keep stove in perfect condition.
I found this product to be a perfect match to the original finish of my solid fuel stove, so used to cover small imperfections, the new paint was indistinguishable from the original.