Tungsten (wolfram); articles thereof, including waste and scrap, powders

Tungsten, molybdenum, tantalum, magnesium, cobalt, cadmium, titanium, zirconium, beryllium, gallium, hafnium, indium, niobium, rhenium and thallium, germanium and vanadium, unwrought, and powders thereof, except powders of magnesium; waste and scrap of gallium, hafnium, indium, niobium, rhenium, germanium and vanadium; cobalt mattes and other intermediate products of cobalt metallurgy