LITTLE DEFORMATION before fracture and failure occurs suddenly without any WARNING i.e. it is the property of BREAKING without much permanent distortion.Normally if the elongation is less than 5% the material is brittle. E.g. cast iron, glass, ceramics are typical brittle materials.Brittle materials have the following characteristics:High compressive strength [compressive strength > tensile strength]Low tensile strengthVery low impact and impact strength and TOUGHNESS Ductile material has high tensile strength, fatigue strength, impact strength, and toughness