Being based on the developed new mathematical models of ceramic materials response to hypervelocity impact and a significant volume of numerical experiment, the samples of materials – prototypes of a new class of impact resistant boride ceramics were produced by hot pressure (30 MPa). AlB12 and AlB12C2-based ceramics produced from specially synthesized nanopowders demonstrated a high mechanical performance and can compete with B4C-based one in ability to dissipate energy of shock waves induced, for example, by the hit of bullets. The developed lightweight AlB12 and AlB12C2-based ceramic materials possess a high fracture toughness, hardness, bending and compressing strength. AlB12C2–based materials synthesized from -AlB12 and TiC at 1950oC (about 300 K lower than that of B4C) were characterized by =3.2 g/cm3 density, estimated at 49N-load HV (49N) = 28.9 GPa Vickers hardness and K1c (49 N) = 5.2 MPa•m0.5 fracture toughness; bending Rbs = 633 MPa and compression Rcs = 640 MPa strengths and that material with = 2.74 g/cm3 demonstrated HV (49N) = 19.4 GPa, K1c (49 N) = 7 MPa•m0.5. The SEM study revealed rather complicated structures due to a formation of solid solutions. Characteristics of boron carbide plates used in body armor of the highest level were as following: HV (49N) = 24.6±0.5 GPa, K1c (49 N)=4.72, Rbs = 392 MPa and Rcs = 1551 MPa.