a superconducting wire , containing nbti superconducting material and cu , comprising a multiplicity of hexagonal elements , which , as seen in cross - section perpendicular to the longitudinal direction of the superconducting wire , have an at least approximately hexagonal outside contour is characterized in that at least a portion of the hexagonal elements is constituted as cu — al composite elements , wherein , in cross - section perpendicular to the longitudinal direction of the superconducting wire , the cu — al composite elements are each constituted with an al core and a cu sheath that surrounds the al core . the nbti superconducting wire is thereby stabilized and has low weight as well as a reduced risk of crack formation during manufacturing , especially during wire drawing .