None
48~53HRC
48~58HRC
54~58HRC
56~60HRC
56HRC~
58HRC~
Hardness of quenching 33 ~ 38HRC
Quenching hardness 33 ~ 38HRC (coating hardness 850HV ~)
Hardness of quenching 33 ~ 48HRC
Hardness of quenching 38 ~ 43HRC
Hardness of quenching 38 ~ 50HRC
Hardness of quenching 43 ~ 48HRC
Quenching hardness 43 ~ 48HRC (coating hardness 850HV ~)
Quenching hardness 48 ~ 53HRC
Quenching hardness 48 ~ 53HRC (coating hardness 850HV ~)
Quenching hardness 48 ~ 56HRC
Quenching hardness 50 ~ 55HRC
Quenching hardness 50 ~ 55HRC (coating hardness 750HV ~)
Quenching hardness 50 ~ 60HRC
Hardness of quenching 53 ~ 58HRC
Quenching hardness 53 ~ 58HRC (coating hardness 850HV ~)
Quenching hardness 54 ~ 58HRC
Hardness of quenching 58 ~ 61HRC
Quenching hardness 58 ~ 61HRC (coating hardness 850HV ~)
Quenching hardness 60 ~ 63HRC
Coating hardness 850HV ~
Hardness of carburizing and quenching 53HRC ~ (deep 0.7~0.8)
Carburizing and quenching hardness 53HRC ~ (deep 0.7~0.8) thread without carburizing treatment
Quenching hardness 45 ~ 50HRC
Quenching hardness 45 ~ 50HRC (coating hardness 850HV ~)
45~50HRC
Quenching hardness 56HRC ~ (coating hardness 850HV ~)
Hardness of quenching 35HRC ~
Quenching hardness 46 ~ 50HRC
Quenching hardness 46 ~ 50HRC (coating hardness 850HV ~)
35HRC~
Coating hardness 800HV ~
Quenching hardness 48 ~ 53HRC
Quenching hardness 48 ~ 53HRC, coating hardness 800HV ~
Quenching hardness 48 ~ 53HRC, coating hardness 850HV ~