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More and more companies are taking steps to reduce the environmental footprint of their processes and products. In the minting industry, this can be challenging. Modern coinage methods, for example, use steel coin dies in order to strike metal blanks by plastic deformation. The quality and definition importance of the master and working dies are fundamentally important, providing a high level of design accuracy and reproducibility. It is important, therefore, to make coin dies with excellent mechanical properties through optimized heat treatments. In this work, TAV Vacuum Furnaces we will report on vacuum heat treatments, including a vacuum implant with a special nitrogen and helium cooling system to maximize the quench efficiency, minimise helium consumption and reduce impurities. The result is a more energy-efficient process, without impacting the quality of the coins, thereby also reducing the need to replace these.