“…The recent conceptual designs of a fusion reactor, both confinements as magnetic inertial [2] consider tungsten (W) as one of the functional materials [3][4][5], candidate to be part of several engineering units, in particular the first wall or first containment barrier, the divertor [5,6], subjected to extreme conditions, temperatures and irradiation, even higher than those in a fission reactor in terms of fluxes, spectrum hardness and number of source terms (neutrons, gamma, H, H 2 , 4 He, 3 He). Of all metals and alloys, tungsten has the highest melting and boiling point (PF-3,422 °C, PE-5,930 °C), exhibits high hardness and good heat…”