ISO | Workpiece Material Group | Material Designation | Material Condition | Hardness | Cutting Speed Recommendations (Vc) |
K | 15 | Grey cast iron (GG) | Pearlitic/ferritic | 180 HB | 250-430 m/min |
K | 16 | Grey cast iron (GG) | Pearlitic/martensiti | 260 HB | 190-270 m/min |
H | 38 | Hardened steel. | Hardened | 55 HRC | 70-180 m/min |
H | 39 | Hardened steel. | Hardened | 60 HRC | 50-130 m/min |
H | 40 | Chilled cast iron. | Cast | 400 HB | 60-120 m/min |
H | 41 | Cast iron. | Hardened | 55 HRC | 70-95 m/min |
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