90W Ø7.15x50.8mm tungsten heavy alloy billet price is 3.30USD/PC on Jun. 26, 2018. Tungsten heavy alloy billet is actually tungsten cylinder rod after surface grinding by center-less processing, and their weights are varied from different tungsten contents and rod sizes. 100% tungsten material cannot be used to make dart billet due to the technical problem, so the ‘tungsten billet’ is actually made of tungsten alloy.