The materials of brake shoes are mainly the following:
Asbestos: Asbestos material is low in cost and light in weight. It is widely used in trucks and engineering vehicles, but its environmental protection is poor and its use has been restricted by national regulations.
Semi-metal: Semi-metal material is commonly used when automobile brake pads leave the factory. It contains metal fiber, graphite and organic materials. It has excellent thermal conductivity and wear resistance and is suitable for daily driving.
Metal: Metal materials include iron and copper. Iron brake pads have good wear resistance, while copper brake pads can see metal blocks or small particles on the surface.
Ceramic: Ceramic brake pads have moderate density, high temperature resistance, corrosion resistance, low noise and no dust falling, and excellent service life and performance.
High carbon (titanium) fiber: High carbon fiber is an upgraded version of ceramic pads. It is light in weight, high in strength, small in thermal expansion coefficient, good in thermal conductivity and heat resistance, and its wear resistance is more than 1.5 times that of ordinary ceramic pads.
Low Metal: Low metal materials have better temperature control and heat dissipation capabilities and low noise. NAO: NAO brake pads are mainly made of glass fiber, rubber and resin, with low noise and less wear on the brake disc. Powder Metallurgy Lining: Used for braking and transmission conditions with higher temperatures, such as aircraft, trucks and heavy construction machinery. Cermet: Combines the characteristics of ceramics and metals to provide excellent performance and durability.