The glass composition, P2O5-ZnO-BaO-Al2O3-SiO2, was examined as a potential replacement for PbO-based glass frit for plasma display panels (PDP). The composites containing ceramic fillers (Al2O3 and TiO2) were evaluated for Young's modulus (E) and hardness (H) using an indention method with a nanoindenter. The value of elastic modulus and hardness both increased (approximate to67GPa, 5GPa) as the sintering temperature (540-600 degreesC) increased. Minimum porosity was obtained at the temperature of 560 degreesC which is near Littleton softening point (Ts) of glass frit. The results suggest that the Pb-free glass frit would be applicable for barrier rib materials in PDP.