Question: are superconductors made of copper?
Answer: Low-temperature superconductor (LTS) wires are made from superconductors with low critical temperature, such as Nb3Sn (niobium-tin) and NbTi (niobium-titanium). Often the superconductor is in filament form in a copper or aluminium matrix which carries the current should the superconductor quench for any reason.