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Table of Typical Surface Hardness Values

ComponentHardnessScale
Hardened Track for Roller670-840 HV
Hardened Machine slideway70-75HS
Surface Hardened Gear (High spc'n)58-63RC
Modern Rails (Used for Normal traffic)300-340HV
Modern Rails (High Duty)340 -420HV
Shear Blades81-85RC
Carbide Dies (Drawing , Forming etc)80-92RA
Mild steel components120HV
Wrought iron102HV
Axe600HV
Fork/Rake700HV
Kitchen knife680HV
Stainless table knife550HV
Hammer Face660HV
Chisel600HV
File60-61RC
Drill Bit HSS63-65RC
Drill Bit Cobalt66-67RC