provided are the high tensile nonmagnetic stainless steel wire for an low loss overhead electric conductor , the low loss overhead electric conductor using the high tensile nonmagnetic stainless steel wire as its core , and a manufacturing method of them respectively . the high tensile nonmagnetic stainless steel wire reduces a core loss and eddy current loss and minimizes effective electric resistance of the conductor by using the nonmagnetic stainless steel wire , that is a non - magnetic material , rather than a high carbon steel wire , that is a strong magnetic material . in addition , an overall power transmission loss is minimized by strengthening the tensile strength of and reducing a sectional area of the steel wire , making an aluminium - welded layer thicker , and increasing the sectional area of an aluminium conductor .