Recommended heat treatment for case hardened parts made of 18KhNVA steel

Conclusions The optimum heat treatment conditions for case hardened 18KhNVA steel resulting in a stable hardness HRC>60 are quenching from 780–800°C in oil or air and subsequent treatment at –70°C for 20–30 min followed by tempering for 2 h at 150–160°C.Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, p. 47, June, 1964