Al-TiC nanocomposites have been a subject of advanced material study for their unique mechanical properties and light weight. The purpose of the research was to examine the impact of different weight fractions of TiC on mechanical properties of aluminum, such as hardness and tensile properties. For modeling, molecular dynamics simulations were used as a precise approach to examine pure aluminum and Al-TiC nanocomposites with 0, 1, 2, 3, 4, and 5 wt% of TiC. Density simulated values revealed a linear enhancement from 2.70 to 2.84 g/cm³ with increasing TiC to 5wt%. Tensile properties showed that the Young's modulus and ultimate tensile strength increased 32% and 54%, respectively. Two predictive models were created for tensile strength and Young's modulus. Nanoindentation simulation displayed remarkable 257% hardness improvement from 35 to 125 HV. The developed hardness regression model was highly accurate. Micro-mechanism analysis indicated that three main strengthening factors were effective load transfer, dislocation pinning, and residual stresses. Comparative validation with experimental data showed excellent correlation. This work provides valuable guidelines for designing optimized Al-TiC nanocomposites via predictive models of high accuracy. Findings suggest 3-4 wt% TiC content as the optimal composition between mechanical properties and density.