The microstructures and impact absorbed energies at various temperatures were investigated for steel strips hot rolled to thickness reductions of 95.5%,96.0%,96.5%,97.0%,and 97.5%.Results indicate that grain refinement can be realized with an increase in hot rolling reduction.Besides,finer precipitates can be achieved with an increase in hot rolling reduction from 95.5%to 97.0%.The impact absorbed energy decreases with a decrease in testing temperature for steel strips hot rolled to 95.5%,96.0%,and 96.5%reductions in thickness.However,in the case of steel strips hot rolled to 97.0%and 97.5%reductions in thickness,the impact absorbed energy remained almost constant with a decrease in testing temperature. The microstructures and impact absorbed absorbed energies at various temperatures were investigated for steel strips hot rolled to thickness reductions of 95.5%, 96.0%, 96.5%, 97.0%, and 97.5%. Results indicate that grain refinement can be realized with an increase in hot rolling reduction.Besides, finer precipitates can be achieved with an increase in hot rolling reduction from 95.5% to 97.0%. The impact absorbed energy decreases with a decrease in testing temperature for steel strips hot rolled to 95.5%, 96.0%, and 96.5% reductions in thickness. Even, in the case of steel strips hot rolled to 97.0% and 97.5% reductions in thickness, the impact absorbed energy is almost constant with a decrease in testing temperature.