Niobium-titanium is a metallic alloy composed primarily of niobium and titanium. It is known for its excellent superconducting properties, which allow it to conduct electricity without resistance at low temperatures. This makes it valuable in various applications, particularly in the field of magnetic resonance imaging (MRI) and particle accelerators. The alloy typically contains around 50% niobium and 50% titanium, providing a balance of strength and ductility. When cooled below its critical temperature, niobium-titanium can carry large electrical currents, making it essential for creating strong magnetic fields in devices like superconducting magnets.