It's 20-guage 326 stainless, it was from an access pannel of some sort, probably from a hotel/mall/elevator. I hypothesise this by the finish, which has a waxy coating, that makes me have to do about 10 minutes of sanding/square inch. However-the flux I'm useing is getting stuck on the metal like a plastic-I'm considering useing a drill mounted wirebrush, it's the white medium flux paste. I have also got a pretty good system to go by for my guantlet construction; and that is to fabricate any seperate componens of it with the bronze stuff, and then to use SilFos15 for the rest of it. Therefore, I can braise the seperate parts onto the gauntlet(I guess I could use bolts as well...)without worrying about the brazing alloy on the pre-fabricated part melting and messing it up.
One major issue I am having though:warping. When i use the bronze ones on a flat surface,(i.e. top of gaunt) it causes it to warp. How did you combat the warping?