Carbon nanotubes (CNTs) were coated on kanthal wire without using any external transition metal catalyst. It was synthesized through thermal chemical vapour deposition technique at 800C and in a flow of gas mixtures, that is, 100sccm nitrogen, 25sccm hydrogen and 20sccm acetylene. Iron and chromium oxides from the surface of kanthal wire activate in hydrogen environment to form Fe-Cr particles. These Fe-Cr bimetallic catalyst particles then catalyze to grow CNTs on the surface of kanthal wire. It was characterized through scanning electron microscopy, energy dispersive X-ray analysis and atomic force microscopy.