CONDUCTIVE WIRE

This conductive wire material is provided with: a metal core wire; and a stainless steel coating layer covering the surface of the core wire. The electrical conductivity of the metal constituting the core wire is greater than the electrical conductivity of the stainless steel. The core wire includes a diffusion layer that is disposed so as to constitute the surface of the core wire and contains 0.5 mass% or more of Fe. The thickness of the diffusion layer is 0.4% or more and 5% or less of the diameter of the core wire. 导电性线材具备：金属制的芯线；以及不锈钢制的包覆层，覆盖芯线的表面。构成芯线的金属的导电率比不锈钢的导电率大。芯线包括扩散层，该扩散层配置为构成芯线的表面，并含有0.5质量％以上的Fe。扩散层的厚度为芯线的直径的0.4％以上且5％以下。