Temper descriptions

The Temper descriptions does not indicate precise details of how the material has been treated, such as specic amounts of reduction during cold rolling, or the temperatures used in the thermal treatments. Tempering is a process of heat treating, which is used to increase the toughness of iron-based alloys. Tempering is usually performed after hardening, to reduce some of the excess hardness, and is done by heating the metal to some temperature below the critical point for a certain period of time, then allowing it to cool in still air. The offered Temper descriptions are made for industrial purposes.