At present, increasing the torque density is one of the main directions in the design of special motors. The application of soft magnetic materials with high saturation magnetic flux density can further improve the torque performance of the motor. The continuous casting slab (CCS) explored in this manuscript belongs to silicon steel (SS), which is an alloy sample extracted from the slab before the rolling of SS. CCS has the characteristics of high saturated magnetic flux density, although its iron loss characteristics are similar to the DT4C, but it avoids the expensive cost of SS processing. In summary, its magnetic and mechanical characteristic are tested to explore the torque impact of its application in the design of high torque density motors, aiming to provide design references for the development and application of new materials for iron cores.