Young modulus of face layer and core layer in three directions on the example of P2 particleboard. The Young's modulus is main parameter characterizing particleboard material which was tested during the bending test according to EN 310. It also known as flexural modulus or modulus of elasticity. For industrial and comparative usage that bending test is sufficient. However, for the purpose of numerical analysis one material constant is not sufficient to describe the material at an acceptable level. The density is undoubtedly related to the mechanical properties of particleboard. The aim of this research is to determine Young modulus of the core layer and the face of particleboard in three directions on the example of chipboard type P2.