... guns, artillery,rockets, satellite, airplane and ship. 1. Grade:W-12. Purity: W≥99.96% 3. Appearance: Shine with grey or dark ... Weight: (29-31.5)kg/case Composition Analysis (%) Main Comp.W≥99.96Other Content≤Fe0.0045Al0.0005Si0.0015Mg0.0006Ca0.001Ni0.002O0 ... .0025C0.002P0.0008N0.002Pb0.0001Bi0.0001Sn0.0001Sb0.001As0.001Mo0.01 Tungsten Bar W-1(W>99.96%)