Considering applications for plasma facing materials (PFM) in tokamak, the French laboratory LSPM has developed a new methodology for nanometric refractory tungsten alloys manufacruting with high homogeneity in composition. The originality of the invention consists in providing to the nanopowders interesting properties’ such as a low brittle-to-ductile transition temperature in order to be machinable, and a good resistance to oxidation. The synthesis of nanometric tungsten alloy powder into submicron platelets offers an increase of ductility of up to 30% and make them suitable for fusion application. This methodology could be applied to other binary, ternary and quaternary alloys as well as High Entropy Alloys (HEA) and find therefore potential applications in non-fusion domains.