👉 Tempering is a process used in metallurgy to remove impurities from steel, which can cause it to become brittle and difficult to work with. This process involves heating the steel at a high temperature (around 1200-1350°C) and then cooling it rapidly back down to its original temperature (usually around 800-950°C). The primary purpose of tempering is to remove impurities, thereby improving the mechanical properties of the steel.