FANSTEEL

TANTALUM,TUNGSTEN,MOLYBDENUM,AND COLUMBIUM;ALLOYS OF TANTALUM,TUNGSTEN,MOLYBDENUM,AND COLUMBIUM,POWDER METALLURGY COMPOSITIONS AND ALLOYS OF REFRACTORY METALS,PRECIOUS METALS AND METALLIC AND NONMETALLIC ELEMENTS AND COMPOUNDS - NAMELY,POWDER METALLURGY COMPOSITIONS AND ALLOYS CONTAINING TWO OR MORE OF THE FOLLOWING;TUNGSTEN,MOLYBDENUM,SILVER,COPPER,GOLD,PLATINUM,RUTHENIUM,IRIDIUM,PALLADIUM,COBALT,CADMIUM,NICKEL,GERMANIUM,IRON,CARBON,AND TUNGSTEN CARBIDE