10/13. cast iron brake rotors [13]. However, the contact situation is affected in different ways by the wide diversity in the mechanical properties of the ingredients of the friction material [ 35 ]. It is named after the gray color of the fracture it forms, which is due to the presence of graphite. Disc brake calipers for the automotive industry have traditionally been made from ductile iron, but more of the calipers are currently being converted to aluminum, with weight savings of nearly 40 percent.

In normal passenger cars the discs are usually made from grey cast iron, while the brake pads consist of composites containing many (sometimes 10 or more) different constituents, compacted by hot-pressing into a solid mass with 5%–10% porosity. Based on the properties, potential candidate materials for automotive brake disc were selected as: Gray cast iron (GCI) Ti-alloy (Ti-6Al-4V) Yamabe et al. In addition, the lower density of aluminium MMCs gives them an economic advantage over cast iron with respect to efficien t use of fuel and fabrication expenses. 8, No 4, 2005 The Mechanism of Changes in the Surface Layer of Grey Cast Iron Automotive Brake Disc 479 They can also originate from corrosive processes. Brake disc cores for casting with cast iron were produced with the modified INOTEC™ inorganic binder system. Based on this study, they developed a new, low cost material for brake discs using some additives. Amongst different materials, cast iron is the most widely used material in disc brakes, since it has a unique combination of excellent wear resistance and a superior heat transfer coefficient . Authors posed the question about the mechanism of friction between a grey cast iron disc and brake pads made of non-asbestos organic friction material. The simplest kind of brake disc you can buy. Manufacturers have long sought to improve the durability and performance of automotive brake discs, which are subject to tremendous temperature and pressure changes. [7] investigated the thermal fatigue strength of grey cast iron by simulating high-speed braking tests using an actual brake disc. The disc, made to replace the composite discs in the company’s aftermarket range, is being introduced for the most current premium Mercedes applications, Brembo is already the OE manufacturer. The most common material used for brake discs is grey cast iron which For cars, the most commonly used disc material is cast iron, because of its good friction properties, low cost, relative ease of manufacture and thermal stability. Brake discs are usually made from cast iron, which is cheap and relatively durable.

Gray iron, or grey cast iron, is a type of cast iron that has a graphitic microstructure. It is the most common cast iron and the most widely used cast material based on weight. Vol. The main disadvantage of the conventional cast iron disc brake rotor is its weight, which has an impact on fuel consumption and vehicle emissions.