Steel for quench and temper
Within the macro category of steel intended for quench and tempering, both structural alloy steels (suitable for high dynamic and static loads) and non-alloy steels (used for lower loads) are included.
Hardness and ductility of quenched and tempered steel
Steels for quench and tempering are ideal for hardening processes due to their chemical composition. They are also intended for heat treatment.
As for the maximum hardness, it depends primarily on the carbon content that the steels have (this generally varies between 0.20% and 0.60%). The highest level of hardness is reached during the hardening phase, while during the following phase, tempering, the hardness is reduced again. In this way an optimal combination of ductility and, at the same time, hardness is obtained.
The materials of alloyed tempering steel
To obtain the desired properties, alloyed tempering steels also have:
- Nichel and / or molybdenum
The uses of alloy steel for quenching and tempering
The steels for quench and tempering are used in various fields.
We can mention for example applications in vehicle construction (such as drive shafts and camshafts), clutch components, axles and fasteners.
As regards mechanical and plant engineering, however, they are used to build pinions, columns for presses, toothed wheels, but also saw blades, chain links and shafts.
The steels for quench and tempering are regulated by the ISO 683 specification, part 1 and 2, which replaced EN 10083, parts 1 to 3.