The braking system used in automobiles is mainly used for helping the driver control the deceleration of the vehicle. It is one of the crucial systems, which is especially designed for decreasing the speed of the fast moving vehicle. A typical automobile braking system comprises of a braking device having different components, which are used for slowing or stopping down a vehicle. More precisely, these devices decrease or stop the speed of a moving or rotating body by absorbing kinetic energy mechanically or electrically. These systems automatically control wheel slips and prevent the wheels from spinning. They are widely used in motor vehicles, buses, trucks, trains, airplanes, passenger coaches, trailers, and other types of automobiles. Brake systems used in automobiles has come a long way in recent years. The adoption of anti lock brake systems along with the introduction of different brake components made of carbon fiber, steel, aluminum etc have really provided better stopping performance in comparison with traditional braking systems. The major manufacturers of brake systems in the world are Bendix, Bosch, Delco, Continental Teves, Kelsey-Hayes, Nippondenso, Sumitomo, and Toyota.

Brake components fitted in the automobiles are critical to the controlled reduction of speed. These comprises of different types of supplementary parts, devices and accessories like brake booster, brake cylinders, brake lines, wheel studs, roll, pumps etc used in the automobile braking systems for slowing down a moving vehicle by transferring the energy of momentum with the help of friction. The brake components work together to perform multitude of functions like slowing, stopping, controlling the speed and movement of the vehicle. Brake components are long lasting, sturdy, corrosion resistant, and easy to assemble. Steel is the preferred metal for manufacturing brake components for automobiles. The other high performance materials that are used for producing brake components are stainless steel, iron, copper, titanium, carbon steel, chromium, vanadium, cast iron, brass, bronze, aluminum, rubber and plastic.