· Compared to the conventionally used gray cast iron brake discs, aluminum alloy brake discs have a lower density and higher thermal conductivity.

· Compared to the conventionally used gray cast iron brake discs,aluminum alloy brake discs are expected to result in weight reduction of up to 50 – 60 % in brake systems.

· During the brake process,the aluminum alloy brake discs can reduce friction heat and shorten  brake distance to prolong the life of brake system.

· The aluminum alloy brake discs have stable and reliable fatigue and wear properties,which enhance the driving safety of automobiles.