14 ZIRCONIUM, HAFNIUM, COLUMBIUM, TANTALUM, TUNGSTEN, AND TITANIUM METALS AND THEIR ALLOYS IN THE FORM OF INGOTS, BARS, ROUNDS, WIRES, AND A VARIETY OF SPECIAL SHAPES, CARBON AND ALLOY STEELS IN THE FORM OF HOT-ROLLED BARS, FORGINGS, SHEETS AND PLATES, BILLETS, RINGS, COILS, AND SPECIALIZED SHAPES