In the present study, the possibility of reducing the probability of cracking in the powder white cast iron at the hot forging in the presence of a liquid phase has been investigated. Hypoeutectic white cast iron powder obtained by milling chips was used as a base. Content of aluminum nitride powder and modes of preforms heating prior to hot forging were varied. When hot forging in the solid phase cracks are formed. Defect-free molding in this case is made possible by preheating pressing tool. However, cracks are liable to form during subsequent heat treatment. Pursuance of hot forging porous preforms of white cast iron with additives of aluminum nitride in the presence of a liquid phase reduces the cracking probability under deformation as well as on heat treatment. The optimization of technological conditions for powder white cast iron production has been performed.