What purpose steel may be heat treated?

Steel is heat treated to enhance its mechanical properties, such as hardness, strength, and toughness. Processes like annealing, quenching, and tempering alter the steel's microstructure, allowing it to better withstand stress and fatigue. Heat treatment can also improve ductility and reduce brittleness, making the steel more suitable for various applications in construction, manufacturing, and automotive industries. Ultimately, these treatments optimize performance and extend the lifespan of steel products.