The overall performance of composites is influenced by the constituent materials, their distribution and their interaction. The properties of the composite structure are determined by the properties of fibre and resin, ratio of fibre to resin in the composite (fibre volume fraction) and geometry & orientation of fibres in the composite.This paper discusses about,extensive coupon testcarried out to characterise the material properties for E-Glass/Vinylester with Tensile and Flexure tests.