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A close-up of an ASTM A36 steel plate Mill Test Report (MTR) on a clipboard, with a red circle highlighting the Heat Number and Carbon content data.

316 Stainless Steel MTR Verification

When your paperwork says the metal is compliant, but the flange shows severe pitting after just 48 hours of salt-spray exposure, you have a supply chain problem. Many buyers assume a piece of paper with a stamp is proof of…