2D-C-C/BN composites (with a BN volume fraction (VBN) up to 0.60) have been obtained by chemical vapour infiltration of hexagonal-BN from a BF3-NH3 mixture, within the pores of a 2D-C-C preform made of a stacking of carbon fabric layers which has been weakly consolidated with pyrocarbon. They were tested in compression on samples with the carbon fabric layers directed either parallel or perpendicular to the load axis. In the first case (p-direction), the compression behaviour is mainly elastic (at least for high enoughVBN). Bothσ∥R andE∥ increase regularly with risingVBN, as the BN-layer deposited within the pores of the preform (mainly located between adjacent carbon layers) becomes thicker,e∥R is weak and progressively decreases with increasingVBN. In the second case (o-direction), the stress-strain curve exhibits both elastic and pseudoplastic domains whose respective extension depends onVBN (or onVp). The pseudoplastic behaviour is related to an irreversible microstructural damage of the interlayer C/BN filling.σ⊥R,σ⊥E andE⊥ increase with increasingVBN (or decreasingVp) according to parabolic laws,e⊥R is much higher thane∥R. The materials remain anisotropic even at highVBN. Oxidation tests in air (or oxygen/argon mixtures) have shown that 2D-C-C/BN, incompletely densified (Vp ∼ 0.10) by BN, exhibit a weight loss (oxidation of the carbon skeleton) at low temperatures and a weight increase (oxidation of BN) above 900° C. Oxidation resistance is enhanced by increasingVBN (which results in aVp decrease) and decreasing oxygen partial pressure. It is predicted that a good oxidation protection of the carbon skeleton requires a full densification by BN (Vp ∼ 0) and will be effective at medium temperatures. The results of the present study could be easily extended to 2D-BN-BN composites.