I. Introduction
In the framework of the Transmission Line Magnet System, MgB2 seems a promising candidate for the magnet transmission line and a possible candidate for the upgrade of J-PARC main ring [3]. In the current design, a single aperture warm iron superferric magnet is to be built around 80 kA superconducting transmission line due to space constraint in the existing J-PARC tunnel. The transmission line is subjected to a large amount of forces during fabrication and operation, which can degrade the performance and current carrying capacity of the superconductor (SC). Electromechanical characterization is a vital parameter for the SC Transmission Line design.