In present study, attention towards the partially bio-degradable composite materials for structural and non-structural components have been described. These partially bio-degradable composite materials replacing the synthetic polymer composite materials in every field of application. This study focused on the utilization of carbon and flax fiber to fabricate the epoxy polymer based composite materials. Mechanical testing (tensile, flexural and impact) was performed to calculate the mechanical stability of prepared composite during different loading and non-loading applications. Investigation of mechanical properties displays that hybridization of carbon and flax fiber with epoxy achieved the comparable properties as compared to carbon reinforced epoxy composites and hold the partial biodegradable nature to the developed bio composite. Neat epoxy shows the minimum value of tensile, flexural and impact strength by 39 MPa, 41 MPa and 8 kJ/m2. Carbon reinforced epoxy composite exhibits largest value of tensile, flexural and impact strength by 362 MPa, 221 MPa and 78 kJ/m2. Hybridization of carbon and flax fiber reinforced with epoxy composite shows the tensile, flexural strength by 201 MPa, 168 MPa and 45 kJ/m2. While flax/epoxy composite presents tensile, flexural and impact strength of 62 MPa, 72 MPa and 12 kJ/m2.