PMI test for 316 stainless

A PMI (Positive Material Identification) test for 316 stainless steel is used to confirm the material's composition by detecting its elemental makeup. The test typically involves using handheld X-ray fluorescence (XRF) or optical emission spectroscopy (OES) devices to identify key elements such as chromium (16-18%), nickel (10-14%), and molybdenum (2-3%). These elements define 316 stainless steel's corrosion resistance and strength. The PMI test ensures that the material meets the required specifications, which is crucial for quality control in industries like chemical processing and marine applications.