Designed for use in high performance composite structures and potting/casting applications, polyfunctional epoxy resin Type EP34CA can be combined with hardeners to provide low viscosity liquid which is intended for filament windings. Mechanical properties vs. time/temperature of unidirectional graphite composites based on Modmore Type II T fiber and matrix of EP34CA/EP34C yield flexural strength of 236,000 psi, flexural modulus of 17.8 x 106 psi, and interlaninar shear strength of 12,700 psi.