the abstract of an essay In this work, the Q&P hot stamping technology was studied to overcome the shortcoming of the existed hot stamping process with low plasticity. Different steels were introduced and compared to verify the effects of the new process, and the suitability of these steels were also discussed. To do so, an experimental tool with U-cap shape was designed to conduct the Q&P hot stamping process, and the mechanical properties were examined with different process parameters. Three mass-produced steels including B1500HS, 27SiMn and TRIP780 were involved and compared through tensile tests and microstructure observations. The stamping results of the U-cap model showed that the plasticity had a notable increase than that of the conventional hot stamped parts. The product of Q&P hot stamping had the duplex phase structure of both martensite and austenite. The material tests illustrated that the Q&P treatment had positive effects to all three selected steels, in which TRIP780 had the best ductility as well as the product of strength and plasticity. SEM images approved that silicon-rich could restrain the forming of cementite and were good for the mechanical properties of the Q&P stamping product.