90% Ø7.15x50.8mm tungsten alloy rod for dart price is 2.10USD/PC on Dec. 3, 2019. Tungsten alloy rod, which contain elements such as nickel, copper and iron, produce a host of alloys which have engineering properties similar to steel, are relatively easy to machine, and can be plated or painted to enhance their corrosion protection. Tungsten alloy rod is approximately 50% denser than lead resulting in a higher concentration of mass in a limited area.