A bright white, soft, ductile metallic element found in several minerals, notably vanadinite and carnotite, having good structural strength and used in rust-resistant high-speed tools, as a carbon stabilizer in some steels, as a titanium-steel bonding agent, and as a catalyst. Atomic number 23; atomic weight 50.942; melting point 1,910°C; boiling point 3,407°C; specific gravity 6.0 (18.7°C); valence 2, 3, 4, 5. See Periodic Table.