In addition to hardenability properties, high strength and ductility are also required in reclamation steels. In order to obtain a sufficient level of hardness, the reclamation steels contain relatively high carbon content compared to others. Since the depth of hardness is the most important criterion for thick section parts, these parts are manufactured from alloyed reclamation steels.

Part dimensions and strength values are at the forefront in the selection of reclamation steels. Non-alloyed reclamation steels can only be efficient in small section parts. For thick section parts, the homogeneity of hardness distribution depends on the alloyed steel. Changes in hardness distribution according to material alloys can be observed with Jominy test results. In simple terms, the Jominy test expresses the hardening values at distances from the cooled end of a rod-shaped material heated to the hardening temperature and cooled from only one end.

As well as being hardened by flame and induction, reclaimed steels can also be hardened by flame and induction after being reclaimed. In the selection of the material to be heat treated in this way, in addition to the chemical composition, the hardness value and hardening depth to be obtained on the surface are taken into consideration. While the hardening depth can be 3 - 4 mm in unalloyed steels, this depth reaches 10 - 12 mm in alloyed steels. In addition, since high manganese will cause cracking hazard during induction hardening, it is more suitable to use high carbon - low manganese Cf quality steels. In addition, the reduction of cracking hazard is closely related to the small grain structure of the material.

Reclamation steels are categorised in 4 main groups according to their chemical composition.

1. Non-alloy reclamation steels

2.Manganese alloy breeding steels

3.Chrome alloyed breeding steels

4.Chromium-Molybdenum alloyed breeding steels