Effect of heat treatments on thermal conductivity and mechanical properties of brake rotor material

Abstract EN

An automotive brake rotor material has noticeable properties where, the gray cast iron is superior for that application.

In this work, a detailed description of the process of improving mechanical properties and thermal conductivity for the brake rotor material that made from a gray cast iron type (A according to ASTM A247).

The study accompanied with a full description of the microstructure evolution in each step of heat treatments that followed.

It is found that, the quenching followed by a tempering process at 500°C can give a better UTS, and elongation at the same numbers of hardness.

Thermal conductivity which is the prime requirements in brake rotor applications also improved according to the microstructure evolution.