Lightweight materials are the material used to reduce the weight of the main product. Lightweight materials are majorly applied in the field of automotive, defense, energy and transportation. Lightweight materials are of great significance in the national defense where they help in the achievement of greater energy efficiency and contributing to energy independence of the nation. Lightweight materials are used to decrease the total energy consumption in the vehicle. It is simply more fuel efficient to manage a lighter vehicle, be it a car, truck, ship or plane than to manage a heavier vehicle. Recently automotive industry has started using lighter material to manufacture vehicle, so as to reduce fuel consumption. Efficiency is one of the key factors in the current fiscal scenario. Fuel efficiency may lead to fewer convoys and fewer losses. Also, lighter weight material helps the company to add additional features and resources within the vehicle. Lightweight material is not only used in automotive industry, other uses include wind turbines, medical technology, pressure vessels and alternative energy sources.