Abstract In this paper, the microstructure, tensile behaviour and quasi-static fracture characteristics of a tool-steel reinforced with titanium carbide particles are discussed. Examination of the composite microstructure revealed a near-uniform distribution of the particulate reinforcements through the metal matrix. The elastic modulus of the composite was higher than that of the unreinforced matrix. Both yield and ultimate tensile strengths increased with reinforcement content in the matrix, but decreased marginally with increase in test temperature. The increased strength of the composite is rationalized in terms of mutually interactive influences of mechanisms based on work hardening and the substructure that evolves from the presence of additional dislocations. Fractographic analysis of the tensile fracture surfaces revealed an overall brittle appearance at the macroscopic level and features reminiscent of both brittle and ductile failure at the microscopic level. The intrinsic mechanisms and micromechanisms governing the tensile fracture process are highlighted.