ITER based conceptual design of EUDEMO divertor envisages W monoblocks as plasma-facing material joined to a CuCrZr cooling tube with a thick Cu-OHFC interlayer. Since divertor configuration will define the power exhaust capabilities of the reactor, additional concepts have been developed within the EUROfusion
WPDIV project. The Functionally Graded Material (FGM) concept is one of the proposed alternatives