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Thanks for all the answers! I really appreciate your help. It was purely a hypothetical question, mostly dictated by my curiousity. I will read more about portable carbon detecting devices. Stay safe!

Hello! I searched about it a lot, but still have no clue - is it possible to distinguish which is which "on the run"? I mean, I have two pieces of metal and I would like to know if it's 304 or 304L, without using any specific equipment (like using a lab to check carbon content etc.). Is it...