In most of the liquid metal MHD experiments reported in the literature to study liquid breeder blanketperformance, SS316/SS304 grade steels are used as the structural material which is non-magnetic. On theother hand, the structural material for fusion blanket systems has been proposed to be ferritic martensiticgrade steel (FMS) which is ferromagnetic in nature. In the recent experimental campaign, liquid metalMHD experiments have been carried out with two identical test sections: one made of SS316L (non-magnetic) and another with SS430 (ferromagnetic), to compare the effect of structural materials on MHDphenomena for various magnetic fields (up to 4 T). The maximum Hartmann number and interactionnumber are 1047 and 300, respectively.Each test section consists of square channel (25 mm × 25 mm) cross-section with two U bends, withinlet and outlet at the middle portion of two horizontal legs, respectively. Pb–Li enters into the testsection through a square duct and distributed into two parallel paths through a partition plate. In eachparallel path, it travels ~0.28 m length in plane perpendicular to the magnetic field and faces two 90◦bends before coming out of the test section through a single square duct. The wall electrical potentialand MHD pressure drop across the test sections are compared under identical experimental conditions.Similar MHD behavior is observed with both the test section at higher value of the magnetic field (>2 T).