Commonly used steel quenching process specification - bearing knowledge

Steel quenching temperature / ℃ quenching medium quenching hardness HRC acuity note 860-35 880 brine 50 820-45 Water or salt water 38 crmoala 50 930-840 950 oil 40 cr 840-55 860 oil or water quenching oil cold 50 42 crmo - 840 860 oil 40 crmnmo 850-45 870 oil 40 MNVB 830-52 850 oil 50 CRV 850-45 870 oil 60 si2mn 840-52 870 oil 60 mn 790-65 820 oil T7 has T8 800-55 820 water or cold water quench oil T10 780-60 800 water or cold water quench oil 60 9 sicr - 850 790-870 oil 60 9 mn2v 820-810 oil 60 CrWMn 840 oil 5 crnimo 60-840 860 oil 5 crmnmo 830-53 Oil 52 3 cr2w8 1050-850 980-1100 oil 50 Cr12 980-1020 oil 60 Cr12MoV 830-1020 oil 60 GCr15 850 oil 60 12 crni3 860 oil after carburizing crmnti 20 840-43 860 oil 2 cr13 after carburizing 980-55 980-1050 oil 45 3 cr13 1050 oil 47