likely wasn’t stainless, maybe nickel plated steel… stainless can’t be soldered to in my experience of buying nickel and not actually getting nickel. stainless is a motherfucker because it looks right, welds amazing, and then you can’t fucking solder anything to it. I have about 2 pounds of what i beleive to be stainless on a roll if anyone wants it for fixing the trim on thier trailer or making chinese armor costumes.