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Minimum design metal temperature Save The minimum design metal temperature (MDMT) is one of the design conditions for pressure vessels engineering calculations, design and manufacturing according to the ASME Boilers and Pressure Vessels Code. Each pressure vessel that conforms to the ASME code has its own MDMT, and this temperature is stamped on the vessel nameplate.
You may find that many paint labels recommend temperatures between 50 and 90 F, but to ensure successful adhesion, itâs better to stay inside the extremes of this range because surface temperatures can be 10 to 20 degrees higher than the air temperature.