Show menu


4140 (T y R)

Medium hardenability steel; In annealed condition it can be subjected to quenching and tempering to hardness values ¿¿around 50 HRC (see general recommendations for heat treatment), in pre-tempered condition (treated or tempered), it has a good combination of toughness and resistance allows direct use in machine part applications.

Acceptable machinability, of the order of 61% with respect to an AISI 1112 steel (100% as a machinability reference in carbon steels - Metals Handbook).