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How can I tell if it is 316 or 304?
I received two 7x15 stainless ports today. When I ordered them I was
assured they were 316 ss. So today I thought I would see if a magnet would stick on one. The magnet stuck. When I called the supplier about another issue I mentioned that my magnet was sticking to the 316 ss port. I was told the polishing process was to blame and the 316 had "picked up a slight magnetic" charge. Is that true? Are there simple NDT methods to determine if a stainless alloy is 304 or 316? Bob |