The quality and reliability of the coin dies on the chosen material, thermal treatment during the production of the die and finalization and treatment of the functional surfaces. The utilization of the dies influences its intrinsic material properties and later a degradation occurs. Coating of the die functional surfaces using a suitable hard PVD coating can substantially increase the quality and lifetime of such die and is almost a must in the case of stamping coins with a PROOF quality. STATON,s.r.o., has developed specialized coatings for application on coin dies that largely improve the quality and reliability of the coin dies
Influence of surface modification by a coating on the lifetime of coin dies
The lifetime of coin dies for stamping of common coins in circulation can be improved more than twice when using hard chromium nitride PVD coating of the die when compared to a conventional chromium-plated die. STATON has developed a highly specialized TiCrN PVD coating for surface modification of dies used for stamping of circulation coins. The die coated with Staton TiCrN coating was proven in an independent test to be more than 9 times more effective than the conventional die.