Springs are basically elastic objects or devices that are used for storing mechanical energy. The springs used in automobiles comes in variety of designs usually conical, torsion, extension, compression, and flat. Springs are made of hardened steel, annealed steel, phosphor bronze, beryllium copper, oil-tempered low-carbon, chrome silicon, chrome vanadium, titanium and stainless. More precisely, a spring is a device, which is used for storing potential energy by pulling the bonds between the atoms of an elastic material. Mostly springs are used for the suspensions of wheeled vehicles. Springs form an integral part of any vehicle because they support the weight of vehicle and allow them to remain stable and smooth even in the harsh and unleveled driving conditions. These are the mechanical parts, which expand at the time when the vehicle hit dips on the road and compress when it, encounter bumps.